I'm after a new free firewall and have noticed that people here either seem to love Comodo (best features etc.) or hate it ("will never install again" and other such comments). Why such extreme views, and what is it that makes people hate Comodo?! I've used Outpost Pro for years but had a love/hate relationship with it (v6.5 and 7.0) so am now looking for a new, free, firewall (with HIPS) that plays nice with Avast 5 and malwarebytes on Win7 x32, and one that runs lighter than Outpost (which seemed to slow my browsing noticeably when used with Avast). Outpost did the job but was not perfect (won't go into that here). Comodo seems to be the best contender on paper, but Privatefirewall also looks interesting. I'm not sure the free version of OA would have enough program and process level configuration options for me. Any comments?