Anyone familiar with Comodo/settings?

Howdy, Folks...

A month or two ago I had to get rid of ZoneAlarm (due to an IE update that made it inoperable). I ended up replacing it with Comodo. It worked just fine until a few weeks ago then I find that more and more often I can't open websites, including DG, my normal weather sites, etc. The funny part is that it seems to only happen in the evenings; during the day this is not a problem. Have no idea why.

Again tonight though I can't get into sites unless I turn off Comodo and all works just fine.
I've never had to adjust settings but always ran it as it came.

If someone else uses this firewall can you explain which settings to use and where to find them? Or any other words of advice would be nice, too!

Thanks all!

Shoe