I just started experiencing some very funky (not in a good way) behaviour with Google Calendar (a

I just started experiencing some very funky (not in a good way) behaviour with Google Calendar (associated with my Gmail account).  I can’t get to my calendar directly for some reason and the links on this page don’t take me to a solution.  Has anyone else seen this?

Update: I think I figured out the problem.  I imported events from Facebook into my calendar and I think the email address embedded in those events somehow confused GCal and I got this message.  GCal seems to be working ok now that I removed the two events.