Somthing similar with Xp can happen but it would happen
when you "Tried" to download an image.
The way i knew this had happened was if i ever tried
image save as and the only option would be a BMP
The solution to that problem was a corrupt active x
so to correct it i would delete the active x installs
and hey presto it would be have as normal again.
Of course i would have to re-install the active x controllers
when i was prompted like flash etc but it wasnt a big deal.
Failing that, could it be a firewall issue ?