Well I putting on Nod 32 on my laptop a while ago and all was well till I restarted it. Then it would start up reach the Vista main window then just freeze up. After having done a couple of manual shut downs it looked as if I was going to have to reformat my drive again. Then I tried starting in safe mode and for the first time I used the restore system and I now have a working laptop again.
Not sure why Nod 32 crashed the system but at least its working again.
Glad the restore worked!
I use NOD32 on Vista with no problems, FWIW.
I'm about to install the ESS today.. so hopefully wont get any problems
Good luck! Although I'm sure it will be a piece of cake!