diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferenceStoreInitializer.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferenceStoreInitializer.java
index 2922442..240342a 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferenceStoreInitializer.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferenceStoreInitializer.java
@@ -18,6 +18,6 @@
 public class ParserChecksPreferenceStoreInitializer implements IPreferenceStoreInitializer {
   @Override public void initialize(IPreferenceStoreAccess storeAccess) {
     ParserChecksPreferences preferences = new ParserChecksPreferences(storeAccess);
-    preferences.enableProto2OnlyChecks().setDefaultValue(true);
+    preferences.enableProto2OnlyChecks().setDefaultValue(false);
   }
 }
diff --git a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferences.java b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferences.java
index 795155b..352a056 100644
--- a/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferences.java
+++ b/com.google.eclipse.protobuf.ui/src/com/google/eclipse/protobuf/ui/preferences/parser/core/ParserChecksPreferences.java
@@ -19,6 +19,7 @@
  * @author alruiz@google.com (Alex Ruiz)
  */
 public class ParserChecksPreferences {
+  // TODO change name to "googleInternal" or something similar.
   private final BooleanPreference enableProto2OnlyChecks;
 
   /**
diff --git a/update-site/artifacts.jar b/update-site/artifacts.jar
deleted file mode 100644
index 9c96917..0000000
--- a/update-site/artifacts.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/content.jar b/update-site/content.jar
deleted file mode 100644
index 5c33af9..0000000
--- a/update-site/content.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/features/com.google.eclipse.protobuf_1.2.2.201202061233.jar b/update-site/features/com.google.eclipse.protobuf_1.2.2.201202061233.jar
deleted file mode 100644
index 1b0faf2..0000000
--- a/update-site/features/com.google.eclipse.protobuf_1.2.2.201202061233.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.2.201202061233.jar b/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.2.201202061233.jar
deleted file mode 100644
index ed26970..0000000
--- a/update-site/plugins/com.google.eclipse.protobuf.ui_1.2.2.201202061233.jar
+++ /dev/null
Binary files differ
diff --git a/update-site/plugins/com.google.eclipse.protobuf_1.2.2.201202061233.jar b/update-site/plugins/com.google.eclipse.protobuf_1.2.2.201202061233.jar
deleted file mode 100644
index a4f3588..0000000
--- a/update-site/plugins/com.google.eclipse.protobuf_1.2.2.201202061233.jar
+++ /dev/null
Binary files differ