macromedia flash distorition with 2.6.0

["Dann S. Washko" <dann thelinuxlink net>]

I'm running slackware-current which recently upgraded to gtk+2.6.0.  
After the upraded there is a problem with flash content viewed in 
Mozilla-based browsers (i.e.; Firefox, Galeon, Epiphany but not 
Netscape).  If the browser screen is moved, clicked on, adjusted or just 
about any other activity takes place on the desktop; the flash gets 
blacked out.  Dynamic content will push through the black, but static 
content will not; leaving a blocky mess.

I was wondering whether this is an issue between gtk+2.6.0 and 
macromedia's flash player of a problem limited to slackware-current.