A new version of GLIntercept has been released:
http://code.google.com/p/glintercept/

This is mostly just a bug fix release, but the 4.3 logging entry points have been defined and the debug context messages have been updated to include the 4.3 logging mechanism.

(Also OpenGL 1.1 support was added to the image logger - so you MS software rendering people should now be able to use it )