Eureka!.. NOD32 v4.0.467 finally works for me!... Some time ago when NOD32 v4 first came out, I reported that v4 worked fine on my XP SP3 machine but the On-Demand scans hung on my Vista Home Premium SP2 machine. Because of that, I downgraded back to v3.0.684. v3.0.684 worked fine on the Vista SP2 machine until last month when one of the modules was updated (the Archive module). From that point on, the On-Demand scan with v3.0.684 also started hanging on my Vista SP2 machine. I also posted a message here about that heppening. I am now happy to report that v4.0.467 works just fine on the Vista SP2 machine. The On-Demand scans (both Smart and Custom) no longer hang. Thanx for getting it fixed!