some window problems

well, these two pictures will show two problems that have been occuring in my ibook g4.

the first one is when the minimize button gets cancelled out, as if it's not supposed to be there, even when it's a program that i know that has a minimizing feature, like Safari, Finder windows, and other common programs. it occurs randomly and rarely.

the second one shows a finder window being in Black. it only occurs in finder windows, about 1/10 of the the time.

these two problems are annoying me. i suspect that they are from shapeshifter 2.2. however, i uninstalled 3 times, removed everyting related to shapeshifter system files, and tried it again. still these problems persist.

forgot to say, these two pictures are in two themes.
the first is aqua mini. the second is in eternal aqua

both problems are seen in any theme i use.

 

ok, is there a solution? is it on the macupdate link?