Google's Webmaster Console seems to have been struggling to quickly verify sites all week.
Right now I would say that 80% of sites in this particular interface aren't verifying when they should be.
It's strange how Google sometimes struggles with things like this. The early Froogle was absolutely awful for grinding to a halt. Blogger, too, has had its fair share of problems.
Orkut, bless it's heart, has the honour of being the least stable Google offering.