RHEL Testing - RHEL 5.7.0 Retrospective

Hi! This thread is for folks who are testing RHEL and have questions/comments/tips and so on. 

RHEL 5.7.0 Beta testing is coming to a close. 6.2 testing is right around the corner. 

How about some retrospective items to consider for 5.7.0? Any testing related issues you stumbled on that we learn from for future releases (bad or good)?

-Chris