After noticing a long wait for a 'bundle install' I checked here: http://www.downforeveryoneorjustme.com/rubygems.org and noticed it was down.
With this site down, it makes doing Ruby development pretty difficult! Is anyone else seeing the same thing?
Update: I also thought that GitHub was down, but it seems like GitHub.com Ok, but GitHub.org is not up. Then I found this link: https://github.com/blog/1036-about-this-week-s-availability which seems to indicate that there's been some DDoS shenanigans going on this week.