No idea if you can roll back the updates Jen, I'm not even sure if that's the problem.
Earlier in the thread I was advised to uninstall comodo then reinstall, that seemed to work 100%, all was back to normal. Then 2 days later comodo went back to being unstable, something is happening behind the scenes that we're not aware of.
Whether this is WGT or comodo causing conflicts I don't know but to be honest I've no idea why WGt would want to make a browser unstable so I doubt very seriously if it's them.
Currently trying comodo ice dragon and that seems fine, not as good as normal comodo was, but ok. Will get round to trying the others soon.