Hi WP Team,
I have a 9 wp sites in total, I upgraded to the new wp 3.5 on 3 of them before stopping.
It seems that the new WP does something weird to the drop down options in the back end (they seem fine on the front end). So for instance, when hover over say, "plugins" the drop down to pick installed, new, etc no longer shows up, you have to literally click it to get to any of the options.
And it seems to effect some plugins the same way. I thought perhaps it was the bullet proof security plugin compatibility issue but I actually disabled the plugins for the last upgrade and the problem still persist, no drop downs anywhere in the back end.