I have no idea what causes this, but sometimes, usually after firefox is open for a while, flash will just stop working. I'll go to youtube and all videos will just not be there. I'll go to Google Analytics and the little flash graphs just won't be there. Firefox never crashes and I'll see no error messages. If I close all instances of Firefox, then open Firefox again, it'll fix the problem. This is very annoying. I'm using 64bit Ubuntu 9.04 and everything else stock.
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