I used to use comodo, and found it very good But, also found it had a very nasty habit of taking offense to some software and just refusing to allow it run, and not bother telling you or flagging up as a suspect file first. Regardless of what settings I tried to change It too had 'issues' with DVD-RB and letting it run, without much head scratching and banging it on the table to convince comodo to allow it to run Shame really as it suited my needs, but what I use now does more and also tell me if its blocking something or warns me it wants to block something from running, which I can allow and it will still monitor it and flag up again if it thinks something not right with what the software is trying to do