[quote=Kaga]
 If upon getting a white screen you simply close that tab and open up a new one (or just navigate back away from the page) instead of refreshing, then you won't wind up double-posting. At least, this is true in my experience. Worth trying out, I suppose.
[/quote]

make a fun facts with Kaga thread
EDIT:
[quote=Kaga]
Now what the fuck is a yellow screen?
[/quote]
[url=http://forums.macrumors.com/showthread.php?t=944624]here[/url]