diff --git a/builds/runtimes/python-2.6.0 b/builds/runtimes/python-2.6.0
index 88301d2..950b04a 100755
--- a/builds/runtimes/python-2.6.0
+++ b/builds/runtimes/python-2.6.0
@@ -3,7 +3,9 @@
 # Build Deps: libraries/sqlite
 
 OUT_PREFIX=$1
-unset LANG PYTHONHOME PYTHONPATH PYTHONBUFFER PYTHONDONTWRITEBYTECODE
+
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
 
 echo "Building Python..."
 SOURCE_TARBALL='http://www.python.org/ftp/python/2.6/Python-2.6.tar.bz2'
diff --git a/builds/runtimes/python-2.6.1 b/builds/runtimes/python-2.6.1
index 2bb5e68..c59e62f 100755
--- a/builds/runtimes/python-2.6.1
+++ b/builds/runtimes/python-2.6.1
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.1/Python-2.6.1.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.2 b/builds/runtimes/python-2.6.2
index d79a3b5..895c69c 100755
--- a/builds/runtimes/python-2.6.2
+++ b/builds/runtimes/python-2.6.2
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.2/Python-2.6.2.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.3 b/builds/runtimes/python-2.6.3
index c130830..14ba437 100755
--- a/builds/runtimes/python-2.6.3
+++ b/builds/runtimes/python-2.6.3
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.3/Python-2.6.3.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.4 b/builds/runtimes/python-2.6.4
index 7ecd7c5..93179d9 100755
--- a/builds/runtimes/python-2.6.4
+++ b/builds/runtimes/python-2.6.4
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.4/Python-2.6.4.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.5 b/builds/runtimes/python-2.6.5
index e70de68..62a7c41 100755
--- a/builds/runtimes/python-2.6.5
+++ b/builds/runtimes/python-2.6.5
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.5/Python-2.6.5.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.6 b/builds/runtimes/python-2.6.6
index 69276fd..f4200b9 100755
--- a/builds/runtimes/python-2.6.6
+++ b/builds/runtimes/python-2.6.6
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.6/Python-2.6.6.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.7 b/builds/runtimes/python-2.6.7
index 6639db2..9d7f6ce 100755
--- a/builds/runtimes/python-2.6.7
+++ b/builds/runtimes/python-2.6.7
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.7/Python-2.6.7.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.8 b/builds/runtimes/python-2.6.8
index 01b6073..20493c7 100755
--- a/builds/runtimes/python-2.6.8
+++ b/builds/runtimes/python-2.6.8
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.8/Python-2.6.8.tgz'
 curl -L $SOURCE_TARBALL | tar xz
diff --git a/builds/runtimes/python-2.6.9 b/builds/runtimes/python-2.6.9
index b346d70..1fb010f 100755
--- a/builds/runtimes/python-2.6.9
+++ b/builds/runtimes/python-2.6.9
@@ -4,6 +4,9 @@
 
 OUT_PREFIX=$1
 
+# Protect 2.6 builds from parent Python (causes segfault during build).
+unset LANG PYTHONHOME PYTHONPATH
+
 echo "Building Python..."
 SOURCE_TARBALL='http://python.org/ftp/python/2.6.9/Python-2.6.9.tgz'
 curl -L $SOURCE_TARBALL | tar xz