I am running 12.1_64 with KDE 4.7.4 and having a problem with google maps. Initially the page appears to load completely but then within about 2 or 3 seconds, everything except the actual map insert goes black.
The refresh instantly reloads the entire page but all except the map goes black again almost instantly.

I have the same issue on another unit running Fedora 16_64 with KDE 4.7.4.

Both have nvidia chips with proprietary drivers.

Any suggestions? KDE seems to be the common denominator here.