diff --git a/ApplicationController.m b/ApplicationController.m
index 3bc6724..431d637 100644
--- a/ApplicationController.m
+++ b/ApplicationController.m
@@ -16,6 +16,7 @@
 #import "PBPrefsWindowController.h"
 #import "PBNSURLPathUserDefaultsTransfomer.h"
 #import "PBGitDefaults.h"
+#import "Sparkle/SUUpdater.h"
 
 @implementation ApplicationController
 @synthesize cliProxy;
@@ -63,6 +64,10 @@
 
 - (void)applicationDidFinishLaunching:(NSNotification*)notification
 {
+	[[SUUpdater sharedUpdater] setSendsSystemProfile:YES];
+#ifdef DEBUG_BUILD
+	[[SUUpdater sharedUpdater] setFeedURL:[NSURL URLWithString:@"http://gitx.frim.nl/Downloads/appcast_DEBUG.xml"]];
+#endif
 	[self registerServices];
 
 	// Only try to open a default document if there are no documents open already.
diff --git a/GitX.xcodeproj/project.pbxproj b/GitX.xcodeproj/project.pbxproj
index be97512..ea6fb6f 100644
--- a/GitX.xcodeproj/project.pbxproj
+++ b/GitX.xcodeproj/project.pbxproj
@@ -114,6 +114,7 @@
 		F5E92A1B0E88550E00056E75 /* empty_file.png in Resources */ = {isa = PBXBuildFile; fileRef = F5E92A1A0E88550E00056E75 /* empty_file.png */; };
 		F5E92A230E88569500056E75 /* new_file.png in Resources */ = {isa = PBXBuildFile; fileRef = F5E92A220E88569500056E75 /* new_file.png */; };
 		F5EF8C8E0E9D4A5D0050906B /* PBWebController.m in Sources */ = {isa = PBXBuildFile; fileRef = F5EF8C8D0E9D4A5D0050906B /* PBWebController.m */; };
+		F5F7D0651062E7940072C81C /* UpdateKey.pem in Resources */ = {isa = PBXBuildFile; fileRef = F5F7D0641062E7940072C81C /* UpdateKey.pem */; };
 		F5FC41F40EBCBD4300191D80 /* PBGitXProtocol.m in Sources */ = {isa = PBXBuildFile; fileRef = F5FC41F30EBCBD4300191D80 /* PBGitXProtocol.m */; };
 		F5FC43FE0EBD08EE00191D80 /* PBRefMenuItem.m in Sources */ = {isa = PBXBuildFile; fileRef = F5FC43FD0EBD08EE00191D80 /* PBRefMenuItem.m */; };
 		F5FE6C030EB13BC900F30D12 /* PBServicesController.m in Sources */ = {isa = PBXBuildFile; fileRef = F5FE6C020EB13BC900F30D12 /* PBServicesController.m */; };
@@ -278,6 +279,7 @@
 		F5E92A220E88569500056E75 /* new_file.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; name = new_file.png; path = Images/new_file.png; sourceTree = "<group>"; };
 		F5EF8C8C0E9D4A5D0050906B /* PBWebController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PBWebController.h; sourceTree = "<group>"; };
 		F5EF8C8D0E9D4A5D0050906B /* PBWebController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PBWebController.m; sourceTree = "<group>"; };
+		F5F7D0641062E7940072C81C /* UpdateKey.pem */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = UpdateKey.pem; sourceTree = "<group>"; };
 		F5FC41F20EBCBD4300191D80 /* PBGitXProtocol.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PBGitXProtocol.h; sourceTree = "<group>"; };
 		F5FC41F30EBCBD4300191D80 /* PBGitXProtocol.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PBGitXProtocol.m; sourceTree = "<group>"; };
 		F5FC43C30EBD050800191D80 /* PBRefContextDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PBRefContextDelegate.h; sourceTree = "<group>"; };
@@ -403,6 +405,7 @@
 		29B97317FDCFA39411CA2CEA /* Resources */ = {
 			isa = PBXGroup;
 			children = (
+				F5F7D0641062E7940072C81C /* UpdateKey.pem */,
 				F50A41130EBB872D00208746 /* Widgets */,
 				47DBDB920E94F47200671A1E /* Preference Icons */,
 				D26DC6440E782C9000C777B2 /* gitx.icns */,
@@ -743,6 +746,7 @@
 				47DBDB6A0E94EF6500671A1E /* Preferences.xib in Resources */,
 				47DBDBB10E94F6CA00671A1E /* Updates.png in Resources */,
 				F569AE930F2CBD7C00C2FFA7 /* Credits.html in Resources */,
+				F5F7D0651062E7940072C81C /* UpdateKey.pem in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/Info.plist b/Info.plist
index 8aa62a7..c6c21a1 100644
--- a/Info.plist
+++ b/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>SUPublicDSAKeyFile</key>
+	<string>UpdateKey.pem</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>CFBundleName</key>
diff --git a/Sparkle.framework/Versions/A/Headers/SUAppcastItem.h b/Sparkle.framework/Versions/A/Headers/SUAppcastItem.h
index d233cd0..7f1ca65 100644
--- a/Sparkle.framework/Versions/A/Headers/SUAppcastItem.h
+++ b/Sparkle.framework/Versions/A/Headers/SUAppcastItem.h
@@ -12,7 +12,7 @@
 @interface SUAppcastItem : NSObject {
 	NSString *title;
 	NSDate *date;
-	NSString *description;
+	NSString *itemDescription;
 	
 	NSURL *releaseNotesURL;
 	
@@ -33,7 +33,7 @@
 - (NSString *)versionString;
 - (NSString *)displayVersionString;
 - (NSDate *)date;
-- (NSString *)description;
+- (NSString *)itemDescription;
 - (NSURL *)releaseNotesURL;
 - (NSURL *)fileURL;
 - (NSString *)DSASignature;
diff --git a/Sparkle.framework/Versions/A/Headers/SUUpdater.h b/Sparkle.framework/Versions/A/Headers/SUUpdater.h
index b3241a3..e78c4d3 100644
--- a/Sparkle.framework/Versions/A/Headers/SUUpdater.h
+++ b/Sparkle.framework/Versions/A/Headers/SUUpdater.h
@@ -36,6 +36,12 @@
 - (void)setFeedURL:(NSURL *)feedURL;
 - (NSURL *)feedURL;
 
+- (void)setSendsSystemProfile:(BOOL)sendsSystemProfile;
+- (BOOL)sendsSystemProfile;
+
+- (void)setAutomaticallyDownloadsUpdates:(BOOL)automaticallyDownloadsUpdates;
+- (BOOL)automaticallyDownloadsUpdates;
+
 // This IBAction is meant for a main menu item. Hook up any menu item to this action,
 // and Sparkle will check for updates and report back its findings verbosely.
 - (IBAction)checkForUpdates:sender;
@@ -45,11 +51,14 @@
 // update is found, it will be downloaded and prepped for installation.
 - (void)checkForUpdatesInBackground;
 
+// Date of last update check. Returns null if no check has been performed.
+- (NSDate*)lastUpdateCheckDate;
+
 // This begins a "probing" check for updates which will not actually offer to update to that version. The delegate methods, though,
 // (up to updater:didFindValidUpdate: and updaterDidNotFindUpdate:), are called, so you can use that information in your UI.
 - (void)checkForUpdateInformation;
 
-// Call this to appropriately schedule or cancel the update checking timer according to the preferences for time interval and automatic checks.
+// Call this to appropriately schedule or cancel the update checking timer according to the preferences for time interval and automatic checks. This call does not change the date of the next check, but only the internal NSTimer.
 - (void)resetUpdateCycle;
 
 - (BOOL)updateInProgress;
diff --git a/Sparkle.framework/Versions/A/Resources/Info.plist b/Sparkle.framework/Versions/A/Resources/Info.plist
index 75f093e..c7f277d 100644
--- a/Sparkle.framework/Versions/A/Resources/Info.plist
+++ b/Sparkle.framework/Versions/A/Resources/Info.plist
@@ -15,10 +15,10 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.5 Beta 5</string>
+	<string>1.5 Beta 6</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>282</string>
+	<string>313</string>
 </dict>
 </plist>
diff --git a/Sparkle.framework/Versions/A/Resources/de.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/de.lproj/Sparkle.strings
index 81388b0..b31f928 100644
Binary files a/Sparkle.framework/Versions/A/Resources/de.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/de.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/info.nib b/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/info.nib
index 778909e..2fb8a83 100644
--- a/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/info.nib
+++ b/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/info.nib
@@ -3,17 +3,17 @@
 <plist version="1.0">
 <dict>
 	<key>IBFramework Version</key>
-	<string>667</string>
+	<string>670</string>
 	<key>IBLastKnownRelativeProjectPath</key>
 	<string>../Sparkle.xcodeproj</string>
 	<key>IBOldestOS</key>
 	<integer>5</integer>
 	<key>IBOpenObjects</key>
 	<array>
-		<integer>89</integer>
+		<integer>18</integer>
 	</array>
 	<key>IBSystem Version</key>
-	<string>9D34</string>
+	<string>10A96</string>
 	<key>targetFramework</key>
 	<string>IBCocoaFramework</string>
 </dict>
diff --git a/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/keyedobjects.nib b/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/keyedobjects.nib
index 5b8f76e..e7e7497 100644
Binary files a/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/keyedobjects.nib and b/Sparkle.framework/Versions/A/Resources/en.lproj/SUUpdateAlert.nib/keyedobjects.nib differ
diff --git a/Sparkle.framework/Versions/A/Resources/en.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/en.lproj/Sparkle.strings
index ffbdf41..16e0787 100644
Binary files a/Sparkle.framework/Versions/A/Resources/en.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/en.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/es.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/es.lproj/Sparkle.strings
index 0488303..f83ea23 100644
Binary files a/Sparkle.framework/Versions/A/Resources/es.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/es.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/fr.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/fr.lproj/Sparkle.strings
index 6314fee..ea175ae 100644
Binary files a/Sparkle.framework/Versions/A/Resources/fr.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/fr.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/it.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/it.lproj/Sparkle.strings
index 43c07b9..5c410d0 100644
Binary files a/Sparkle.framework/Versions/A/Resources/it.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/it.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/info.nib b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/info.nib
index 3f09790..d2586ea 100644
--- a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/info.nib
+++ b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/info.nib
@@ -7,11 +7,9 @@
 	<key>IBOldestOS</key>
 	<integer>5</integer>
 	<key>IBOpenObjects</key>
-	<array>
-		<integer>6</integer>
-	</array>
+	<array/>
 	<key>IBSystem Version</key>
-	<string>9D34</string>
+	<string>9E17</string>
 	<key>targetFramework</key>
 	<string>IBCocoaFramework</string>
 </dict>
diff --git a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/keyedobjects.nib b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/keyedobjects.nib
index be38289..c82d358 100644
Binary files a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/keyedobjects.nib and b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdateAlert.nib/keyedobjects.nib differ
diff --git a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/info.nib b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/info.nib
index 33a6020..d2586ea 100644
--- a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/info.nib
+++ b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/info.nib
@@ -9,7 +9,7 @@
 	<key>IBOpenObjects</key>
 	<array/>
 	<key>IBSystem Version</key>
-	<string>9D34</string>
+	<string>9E17</string>
 	<key>targetFramework</key>
 	<string>IBCocoaFramework</string>
 </dict>
diff --git a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/keyedobjects.nib b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/keyedobjects.nib
index ef9b2cd..ac298ce 100644
Binary files a/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/keyedobjects.nib and b/Sparkle.framework/Versions/A/Resources/nl.lproj/SUUpdatePermissionPrompt.nib/keyedobjects.nib differ
diff --git a/Sparkle.framework/Versions/A/Resources/nl.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/nl.lproj/Sparkle.strings
index a1de544..67cf535 100644
Binary files a/Sparkle.framework/Versions/A/Resources/nl.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/nl.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/relaunch b/Sparkle.framework/Versions/A/Resources/relaunch
index 6f5372a..e7b96d6 100755
Binary files a/Sparkle.framework/Versions/A/Resources/relaunch and b/Sparkle.framework/Versions/A/Resources/relaunch differ
diff --git a/Sparkle.framework/Versions/A/Resources/ru.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/ru.lproj/Sparkle.strings
index 79140dc..f3ff9d8 100644
Binary files a/Sparkle.framework/Versions/A/Resources/ru.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/ru.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Resources/sv.lproj/Sparkle.strings b/Sparkle.framework/Versions/A/Resources/sv.lproj/Sparkle.strings
index 646559b..b676a4f 100644
Binary files a/Sparkle.framework/Versions/A/Resources/sv.lproj/Sparkle.strings and b/Sparkle.framework/Versions/A/Resources/sv.lproj/Sparkle.strings differ
diff --git a/Sparkle.framework/Versions/A/Sparkle b/Sparkle.framework/Versions/A/Sparkle
index a26791a..2d9bb2a 100755
Binary files a/Sparkle.framework/Versions/A/Sparkle and b/Sparkle.framework/Versions/A/Sparkle differ
diff --git a/UpdateKey.pem b/UpdateKey.pem
new file mode 100644
index 0000000..bc1591f
--- /dev/null
+++ b/UpdateKey.pem
@@ -0,0 +1,20 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----