I'm running Vista Ultimate 64, I never had this issue until 2 days ago just after running Adobe updater, I did also try a new Nvidia driver but that screwed up on installation, aproblem with their code I think because it tells me I don't have a 64 bit system [LOL].
So either it was the adobe updater or the nvidia driver screwed something, I did reinstall the previous Nvidia driver though so I'm thinking that's not the issue!!

They have come back with a host of stuff to try that I'll have a go at this weekend, re-doing the prefs being the first step, failing that I have a ghost back up of my pc done a couple of weeks back, I'll just put that in, that won't be an issue because I haven't put much new stuff in lately, it'll just mean updating my AV and such, but not adobe!!! [LOL].

 

Injustice will be avenged.
Cofiwch Dryweryn.