I haven't tracked the progress of the following two bugs, but I was surprised to see they're still there, even in 6.0.4
The first is the red underline on the tab even when the file is ok (and the validation square is green). The second one is the title bar not staying in sync with the edited file (useful mostly for the path when there are more classes with the same name).
Any chance of getting these addressed in a 6 point release?
Oh, I'm using jdk 6 to start IDEA, not sure if that would make a difference.