OK guys this is my review of ArcaVir 2005 (It is also my first ever complete review of an AV product): 1)Installation: It was a very easy process with not much to it. Just enter the serial key, tell the program whether you want to configure the Updater after installation, tell which folder you want to install into, click 'next' and thats all. 2)Resource Usage/Slowdowns: While I did see a slight slowdown during bootup times, this faded after a minute or so. The program places these processes in memory: ABRegMon.exe - ArcaBit Registry Monitor avmonsv.exe - ArcaVir Monitor netmonsv.exe - ArcaBit NetMonitor arcascan.exe and arcaserv.exe - Unknown (arcascan.exe is similar to KAVSS.exe in KAV i.e. actual scanning of files is done by arcascan.exe) abmenu.exe - Probably related to UI In total it takes about 53MB of memory, but I see no noticeable slowdown in PC performance whatsoever. EDIT:- The processes only ACTUALLY take up about 10MB of memory, and the remaining is put into 'virtual memory' i.e. page file. I was unsure of this so I waited for confirmation from Mariusz *see his post here* 3)Malware detection: I gotta hand it over to ArcaVir. When I made the switch from eScan, I thought there would be no AV which would match KAV for detection. While that may still be true, it is not for me. ArcaVir, so far, has caught every piece of adware and trojans I threw at it (I threw only a few though, IstBar Adware, HotBar Adware, Briss Keylogger) The heuristics engine has not given me any FPs so far even when set at max heuristics (very high). 4)Other details: On-Demand Scanning speed is noticeably faster than eScan, although I wouldn't say its a bullet train at this. Features:- ArcaVir comes with a Firewall and registry monitor alongside an Anti-Malware program. It also has a quarantine. Both tools work very well, and I've had no problems at all using any of them. Updates:- I get an update everyday except for weekends. Fine enough. On a scale of 100, I would award Arcavir a 94. Comparitively, I would award eScan - 84, KAV 5 - 90, McAfee 2005 - 92 and Norton 2005 - 89 Hope this review helped. Best Regards, Firecat ADDENDUM TO THIS REVIEW:- This edit was done to give my opinion on their tech support. I find their support very very responsive, though the only person I've spoken to is stormbyte right here (he replied when I sent support an email) and their solutions are quick and fast and informed too. I got a reply in less than a day for my query! Stormbyte said he'd give me the betas for testing as and when it comes....so I'm a tester now!