Hi! The current version of ESET AV 4 is 18.104.22.168. Yesterday I received a call from my sister informing me her laptop wouldn't boot anymore. Upon booting, it showed a BSOD and nothing she could do about it. She then told me right before this problem started, the antivirus crashed saying something about security failed, and ESET had to close. Then she rebooted, and she received the BSOD. When booting into safe mode, she had Windows troubleshoot the problem. Microsoft’s crash report page indicated her version of ESET was out of date, and the cause of the crash. I advised to perform a system restore, and this indeed solved her problem. So far the background info. When back into Windows, I checked if there were any updates ESET didn't find any. However, this was the version installed: Then I checked against another pc, also running ESET AV 4. This one also seemed to be out of date: I manually updated both pc's, and didn't find any problems so far. However... Why were both installations out of date in the first place? I can imagine little updates aren't pushed by ESET, but when they cause Windows crashes and Microsoft indicates ESET should be updated, I would say it's a serious update that needs to be installed for proper protection. When ESET crashed, two dump files were created, memory.hdmp and minidump.mdmp. It's contents: memory.hdmp minidump.mdmp Also, the Windows log files show a tremendous amount of Windows application faults right after ESET crashed.