Did a quick search but couldnt find anything (in first page anyway). Was on for some time, maybe 2 hours when the gunsight in 109F4 turned solid white, I respawned and it was ok.
Then about 1 or 2 quick sorties later, had the same problem plus text box was transparent apart from the cursor flashing. Respawned couple of times but that didnt fix it, relogging did.
Win2k, AMD 2.3Ghz, Geforce FX5600 256 Mb, and 512 Ram.