I’m not 100% sure this is to do with comodo but it started around the same time I installed comodo.
I have broadband(modem usb connected to pc) and I find that now if I leave my pc for 5 -10mins and come back and try to continue browsing or check e-mail I get and pop up box saying “work offline - no connection to the internet is currently available… click try again to attempt to connect” I click try again and everything works as normal.
Is anyone familiar with this weirdness?