Trouble installing mocha

I am trying to install mocha on my OS X MBP and when I use

sudo gem install mocha

I get this error:

ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError)     Errno::ETIMEDOUT: Operation timed out - connect(2) (http://

I got it last night and thought maybe the service was down, but I get the same error this morning.

Thanks in Advance, Chas Lemley

Nevermind, I figured it out. I was having a DNS issue with my router.