I'm having this wierd problem for some time now. It happens only with mozilla:
When mozilla browser has more than one window open + the mail client is running too (several windows are open...), whenever I switch desktops (using Window Maker) and returning to the mozilla desktop, mozilla is showing some blurred fuzzy output, it's title bar and it's window content are flashing at high frequency, and it's inoperative. This continues until I press one click over it's title bar or do similar action with my mouse (scroll the wheel), or pressing Alt+Tab. Then, mozilla calms down in an instant, showing the output it already contained. Wierd, isn't it? I'm not sure where the problem is - X, Window Maker, Mozilla (happens only with it). My wild estimation is that there's more than the Mozilla alone here, but I'm unsure.
System: Debian unstable, kernel 2.4.20 Mozilla 1.4-2 Xfree86 4.2.1-8 Wmaker 0.80.1-6
oh yes, and google didn't help this time.
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