Terratuner, could you tell me how you fixed this problem?
I've been stuck on the same problem for weeks now and it is already a real pain in the ass.
The strangest thing is that often background images are only partly missing.
Just switching between windows with alt-tab is enough to let ie8 fix the broken parts.
Anyone?
edit: Also this only seems to appear with windows vista / ie8 and compatibilitymode off.