Seemingly out of the blue Google Calendar ceased to function for me the other day. I finally tracked the issue down to Greasemonkey and more particularly to _blank Must Die. Adding the two lines I listed below to it seems to have fixed it for now.
// @exclude http://calendar.google.com/* // @exclude http://www.google.com/*
I’m left to wonder what brought this on so suddenly, since I haven’t touched the script prior to this in ages — in fact, I had a hard time even remembering I was using Greasemonkey at all.