Hi All,
There are similar threads going in another forum. There was a bad signatures file posted this morning around 7:45am PT.
If you can update your settings either locally or Server side to turn off this setting:
Start malicious website blocking when protection module starts
And then make sure you update your signatures. It appears of you can get onto version .12 for today the combination of that settings change and the new signatures will stop those alerts from popping up.
Sounds like they're still working on a longer term fix to allow re-enabling that setting once they've fully resolved it but this should get your machine back to usable status.