Forgive me if this is a known issue... I've only now spent a significant amount of time on the 3.0 demo site...

I found the following UI issue:

You can see below the bottom entry "Michael Testing" appearing from behind the table header:
graphic


Hopefully this is a simple CSS Z-Index fix?

Sorry for the late input... and I should add that 3.0 looks great. Looks like updating and training will be a good 2011 New Years project for me :-)