BitDefender 8, any comments?

My ISP recommends this program as a free alternative for virus protection. Anyone familiar w/ it that can comment good or bad?
It also specifies IE 4.0. Since I use Netscape 8.1 will this be a problem?

I tried it for a little while, but it ended up bringing my system to a standstill. I had to go into safe mode to uninstall it.

Now I just use AVG and periodically run a scan through TrendMicro, which seems to work just fine.