v3 will cause hard lockups and no events in the event log. I ran into this on plain vanilla domain controllers and member servers, 2003 and 2008. I haven't encountered any issues on workstations with v3 (Vista and XP), just servers. I run v2 on the servers and it's fine. See these threads: http://www.wilderssecurity.com/showthread.php?t=197748 http://www.wilderssecurity.com/showthread.php?t=197567 Dave Graff wrote: > Some users have been reporting hardlocks when running Nod32 on servers. > Between the reports I have seen here and on the Eset support forums, the > commonality between the failures seems to stem from running database > applications on the server. As a rule of thumb with any antivirus product, > you should configure exclusions so that the live databases on your servers > are not being hit by the real-time scanner or on-demand scans. > > We have been slowly migrating to Nod32 on servers and workstations and thus > far have not see the issues others are describing, but we have also been > very careful with our exclusion lists. Beyond that, make sure you are > running the current build which is 650. > >