gtk interface is freezing.. any ideas?

[Michael MacDonald <michael macdonald6 verizon net>]

hello,
I'm not sure how to describe this but i've noticed a problem with many 
of my gnome-based programs.  the gtk interface seems to freeze and parts 
of the pixmaps do not display, the text will eventually become 
unreadable and the program will eventually freeze. It seems to happen in 
gaim, gnapster, panel, xmms. Basically any gnome app I run eventually 
show this problem if left running long enough, only way to fix it is to 
restart the program
anyone know what i'm talking about or experienced this? I'm using 
DarkMarble for gtk theme, perhaps its incompatiable?  I haven't tried to 
see if the program still occurs when i'm using another gtk theme. if i'm 
not providing a good enough description please reply and I can try to 
explain what happens better and give you more information.
macado macado:~$ gtk-config --version
1.2.10
macado macado:~$ glib-config --version
1.2.10


Thanks,
Michael MacDonald