After my postings in this forum under anti-malware 3.5 guard crashed, and reading all the help given there, (thank you very much!), last night I immediately went and downloaded the 4.0 version, as directions stated. I then went ahead and let the complete scan run while sleeping. In the morning, it showed that there were no threats found, which was odd to me. No cookies cleared, nothing, zero, nada. So I went back to the scan page to chose individual scans, and started with the "Memory Scan". It started to run, 0 seconds of time elapsed, 31 objects scanned and BAM!..completely froze the machine, including the mouse! I had to shut down at the box, instead of the shutting down with the Start. When I re-booted, I opened my Firefox(tm) Browser page, opened Tools-Options-and checked to see if it had cleared the cookies. AACK! ALL cookies were still there! I am very worried that this new version is not protecting my machine!