Current Comodo AV performance is met with lots of skepticism-I never used it when I was using CIS. How good will the new version of the CIS AV be next week? What will its performance characteristics be? No one knows, and there seems to be no plan for any near term objective evaluation. Comodo says their goal is for the AV will be one of the best by October 2009, and it is currently January, so
. CIS is, afterall, becoming a new beta. Avast! is already one of the best AVs, with a proven record of performance. If you want to be a beta? tester of the new CIS product, which also apparently integrates a lot of other features into CIS, can afford to recover from the problems, and don't really depend on the AV performance, there seem to be many Comodo fans willing to do that. Using tools like Acronis True Image and being very careful of your HIPS setup can facilitate this. If you want the best protection for your computer in the near term, and fewest potential issues, continuing using the Comodo Firewall and D+, but using Avast! (or other proven AV) as your AV is the recommendation. BTW, Comodo seems to ignore the fact that the competition is also making great strides, so that by October the anti-malware playing field should be quite different. There are new tools like Prevx Edge (and others) that seem to have lots of potential. And, of course, Avast 5 should be a contemporary. But "heuristics" can mean lots of different things depending on the vendor, like "cloud processing" and "behavior monitoring", and other popular phrases, so I am still looking to see what develops. And plan to try out the "best of breed" rather than using any suite.