I've been using AVIRA Premium 2012 (Realtime only, no ProActiv and Webguard) for 5 days now and the only thing that bothers me is that the i/o read bytes are too high even though I don't experience system slowdowns. At boot it's already at 1GB then after an hour it already reached 10GB! I read that this is caused by the ahead scanning feature of AVIRA. Is this bad for my hard drive? I use AVIRA because of it's excellent detection of 0-day malware and it's lightness but if it thrashes the hard drive too much, I might ditch this and try other AV's.