Hi there,
I've read the forums a bit (maybe I've missed something) but there's a really annoying bug that I suspect has been around since at least version 8. If you are using dual monitors and like to keep your documents on monitor 2 (as i do, since i use a laptop connected to a 21" trinitron screen), dragging or double clicking the title bar of a document window will cause the window to vanish completely. I can get it back by going window>cascade or tile, but this is still extremely annoying. I was hoping it would be fixed in CS but sadly it hasn't.

Cheers

Luke

PS. Illustrator is the only program i know of with this problem. Photoshop, InDesign, etc all seem to work fine with this setup.