I'm still using version 5.5.7 (version without antivirus) since I was displeased with version 5.8 build 51, it slowed down web browsing a bit (just a bit, but that was a bit too much), and I didn't like certain privacy implications. I believe build 51 was the one that came after a very unstable earlier build, which I tried, and subsequently quickly used my imaging software to go back to before the installation of the new version. So, Webroot has released a new build. (55) Anyone interested in beta-testing this new version ? It mentions enhanced antispyware protection, but the only thing I could find in the last version (build 51) was something about masked files. If you find more besides Vista compatibility and a gaming mode, feel free to tell us. I'm not going to bother trying this new build, for now anyway. If you do try it, it's important that you use a customized install. I'm still not sure about that tracking cookie, I was not able to find it when I was trying build 51, and I don't know if it's part of 5.5.7 too. If you think that privacy is an issue: you can opt-out of certain things during the customized installation, and other security vendors gather and share your information too, example: McAfee has an arrangement with Doubleclick. I believe you can try the Spy Sweeper (version with or without antivirus) for free, I'm not sure, but that free trial version has real-time protection but does not remove found malware.