See attached screenshot. Visiting certain pages in firefox seems to be a good trigger for this bug. First a rectangular splat appears in the firefox window, which moves about when the window is scrolled. Moving into other windows causes the corruption to change shape/position too. Sometimes, other windows also take on the same corruption. Moving them leaves pretty trails over the desktop.
Created attachment 4205 [details] screenshot of garbage
does this happen with NoAccel ?
actually i can reproduce this, ScreenToScreenCopy seems to be broken at least on LP64 machines.
seems to be a dupe *** This bug has been marked as a duplicate of 4456 ***
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