Tony,
I watched a lockup yesterday at work, and I watched it finally "get over it" as well. It was in transient mode, stuck with one pixel showing at the bottom. The transient line didn't change when the songs changed, but the visuals were still going. No button input was accepted. Then, about one song before the player "got over" the lockup, a second line of different transient information showed (now two pixels deep, and different pixels than before). When the player finally did get over it, the menu popped back up like it had remembered my key presses in a buffer or something (although I'm not sure I pressed the menu button, but I might haver). Sorry if all of this has been observed before.

-Jeff