diff --git a/builds/runtimes/python-2.6.0 b/builds/runtimes/python-2.6.0
index 88301d275acab79bcc035264889d64dc260688af..950b04ab6eb9a4904ac7ba2bb8c42abd9ee6faca 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 2bb5e68dc2bf11952fd457de644331ab303e0a07..c59e62fae7a3a27f954071610bd253b20b0d449e 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 d79a3b593af31326c2ff8362286a89b0f71401f6..895c69c4cfb8114b67164a5e0addaaf4cb053fb1 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 c130830f6f6b85eb6c0d41a59e5720111856193d..14ba4370f5eae2bdca672503d542b5dcac152ee2 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 7ecd7c56bfbcd545cf314ad1ae39dfa44d977c5f..93179d910028ad65a47e4e2bf6ac6e017b1f0b2e 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 e70de6843c65db747f30138970836c3235bb1b0a..62a7c41051b0013cc056624414de84db4739e58a 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 69276fd714708e0d3603800cdac1a8259341eac1..f4200b9709ab5c88258b022942f3cbcb7ce14b3a 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 6639db2806df1135a5b008cf62af31c567ba1f2b..9d7f6cea85298a8e30ac4a1ccdf8d183957367c8 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 01b6073109169ebdb2930ff481dca3edd5252027..20493c70ab0ef801850a434774d80e944fae8ed7 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 b346d70463faa1d4542622fb530d579cbe4daab8..1fb010facc4a7c8d4dab6e497cdf8717d3872a51 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