Hi,
I recently switched from NAV because I felt to many little things were filtering through and I grew a little uncomfortable with their once a week update program.
I tried out McAfee (nice but also once a week), NOD32 (which I am considering purchasing as a backup scanner), and KAV 4.5.104 Pro (Personal does not appear to be available anymore for this version), 5.0 Personal, and 5.0 Pro.
First, in regards to support. During my evaluation I sent several emails to KAV regarding the questions I had concerning 4.5 and 5.0 and 5.0 Personal and Pro. I never received one reply to any of my emails. This I consider to be very poor because we are talking about pre-sales.
However, I was not totally turned off to KAV, since I don't get any better support from McAfee or Norton. However, I do get excellent support for KAV on this forum and Wilders which is enough. Plus, during my evaluation, I found that ICE Systems (a reseller) was excellent. I would normally get responses to my questions withing minutes! Quite a difference. So if you decide to purchase, you may want to look at ICE Systems. They definitely try to help out.
Both versions of 5.0 played havoc on my system. There were just to many crashes and incompatibilities with the other programs that I was running in the background. I cannot remember what I was running during the evaluation, but right now I am running BOClean, Ewido, ZoneAlarm, Prevx, and Giant Anti-Spy. I run SSM once in a while, but that too is pretty unstable right now. This may be overkill, but I have been hit several times during the last year and my system seems to be more resistent with this setup. I will also be evaluating ProcessGuard 3.0 when it comes out.
KAV 4.5.104 Pro has been running flawlessly on my machine. It has installation configurablity tha that 5.0 Personal does not have. Also, it does not use ADS. ADS was a real problem for me when I ran TDS-3 scans with ADS scanning enabled. TDS-3 was reporting every file with the Kavich stream. I had to set TDS-3 to ignore and ADS with Kavich. I felt that this left a "hole" in TDS-3 checking that could be exploited. Not sure if this is something to be concerned about, but I sure didn't like it, especially since 5.0 was not giving me anything (other than troubles) that I couldn't get with 4.5.104.
So I am very happy with 4.5.104. The frequent updates and the xtended databases, I feel, do a good job of covering me. I will upgrade to 5.0 Pro when it is very well tested and some of the issues regarding ADS configurability have been addressed. Personally, I found no real reason to install it on my system at this time.
Hope this helps,
Rich