I am in the process of updating a few of my clients wordpress installations to version 2.7.1 today. This new version includes fixes for approximately 68 support tickets that were submitted. It is a stable release and if you had issues w/ version 2.7 breaking your installation or conflicting with some of your plugins you should find the fix you were needing included in this new release. Fortunately version 2.7 worked well with all of my clients and we didn’t experience any issues with plugins, etc.
Custom Query – WordPress Trac
Testing out facebook connect