I am currently running a trial version of NOD32 4.0.474, and have been doing so the past 12 days. I have been very pleased with NOD32 in all aspects. Until today, I have had no problems. The startup icon is green, indicating all is functioning normally. I checked the update screen today, and noticed the last successful update was 2/16/2010. I tried the manual update, and received the message that no update was necessary as the virus signatures were up to date. However, the last successful update still registered 2/16/2010. I rebooted, same result of 2/16/10. I cleared the update cache, rebooted, same result. I uninstalled, restarted, reinstalled trial. Now, it appears as though I have another 30 days, but the virus signature database is listed at 4754 with a date of 1/8/2010. Not what I was looking for. Thought I would try the beta. After reading a warning from XP telling me it may not be compatible, I install anyway. Everything looks good. Now the little icon is orange- NOD32 needs attention. Great. I know that. NOD tells me the virus signature is out of date. That's what I am looking for. Now we update. Except NOD32 won't update. Says I need a username and activation code. Never received one from ESET. I clicked the trial download, entered my email, received a link. Never entered anything into the trial version I was running. Maybe that is the problem, but it updated fine for 12 days. So, I uninstalled, rebooted, re-installed the trial. I have again been awarded a fresh 30 days use, but with a virus signature database appearing to be over a month old, and the NOD icon telling me everything is fine. I have made no system changes. The only event of note is that my browser came under attack on the 15th of this month as my wife was looking for sites to print off birthday invitations for our kids. As an aside, NOD32 withstood 61 trojans from some kind of site-deleted and quarantined them all. I ran scans all day with NOD32, NOD32 in safe mode, MBAM, MBAM in safe mode, Prevx, and Hitman Pro. Nothing found. And NOD32 updated 3 times after that- successfully. Note- MBAM is not, nor ever has it been, in real time. I was very impressed. Still am, actually, and very much wanting this to work. Help? edit: tried the tips from KB regarding disabling self defense, clearing cache, deleting program files, etc. No go. Back to 1/8/2010 definitions again.