It was bad for me. Somehow it turned shutting off/rebooting the computer into a 15 minute affair, where I initially thought it actually hung at the "saving your settings" part of the shutdown. (Windows XP SP3) Considering the not-rare occasions where I need (or want) to reboot, this was unacceptable. I ended up finally making the switch to Microsoft Security Essentials. I was wondering if any of the rest of you have had a similar experience with the new version of Avira.