I'm still not experiencing the issue over here. I've installed iTunes v5.01, ObjectDock 1.20a.015. There a shortcut I placed in my ObjectDock tray to iTunes, and after launching the program I have not experienced this issue.
I've attempted overlapping the window, activating a window that was behind iTunes to completely hide iTunes and then both moving it and minimizing it to reveal iTunes. Finally, I tried minimizing iTunes and then maximizing it again.
It sounds like your window is getting the message to redraw, but is not getting the information it needs to redraw. (in other words, it's redrawing parts it needs to, but with black)
How much memory do you have installed on your system (also how much free space on your hard drive)?
You might want to run a bootable memory test utility: Floppy <
Link> or CD <
Link>
-Mike
[Stardock Support]