This morning when I stared my computer, I was a little perplexed when NOD didn't update its definitions. When I checked them, it was stuck at the 4610 definitions, even though the Threatsense website showed 4612 as the latest version. I tried to manually update the definitions, but not only did the update link in the update pane say "Update unnecessary", but clicking it did nothing. It was as if it weren't even checking to see if updates were available. After a reboot, I tried manually updating again. This time it did start to check, but it hung on the 0/0 progress bar, and then wouldn't respond to requests to abort. Eventually it timed out, and now my update pane has a big warning on it saying "Virus Signature Database Update Failed". Can anyone please provide advice? I just did a full system scan yesterday (along with a full MBAM scan), and they both came back clean. I'm not sure if this is malware blocking update attempts or what, but any help would be appreciated! Thanks! Note: I'm using Win 7 Professional, and NOD 32 v4.0.437.0 Update: Looking at the open Ekrn.exe connections through TCPView shows that it's trying to connect to a variety of uXX.eset.com addresses for the update. Pinging these domains from my machine give me no response. I checked my HOSTS file, and I found nothing in there that has "eset" in it.