seg fault, gtk_fixed_expose

["Thomas J Lewis" <tjlewis link com>]

get segmentation fault when clicking
on windows. doesn't happen all the time.
doesn't point to a line of code in my software.
running xxgdb get error message:

Program received signal SIGSEGV, Segmentation fault.
0x401ba306 in gtk_fixed_expose () from /usr/lib/libgtk-1.2.so.0
(xxgdb)

thanks in advance,
tom