We have rolled out updates for some clients from nod32 v2 to nod32v4, and had to roll back some servers to v2 as v4 basically killed server performance.. exclusions etc did not help.. I see there is a new engine update as of yesterday that may address these issues.. but how can i force an engine update.. i can force a definition update, but not an engine update. Im also having a problem with some servers lagging behind in updates (2 of 10 or 12 servers).. all of a sudden updates arent detected from the local mirror for 2 servers.. i can force a definition update, but it says no updates available.. All the other servers are happily getting updates from this mirror.. I change it to update from the web and it gets the updates happily. We skipped version 3 as it was the 'vista' version of nod32, and we were hoping version 4 is the 'windows 7' but so far it seems a bit non-production ready?