Mongrel time out

I’m getting this strange error:

/usr/local/bin/mongrel_rails:16Thread #<Thread:0xb7324cec sleep> is
too old, killing.Thu Feb 07 09:12:11 -0800 2008: Error calling
Dispatcher.dispatch #<Mongrel::TimeoutError: Mongrel timed out this
thread: shutdown>

Waiting for 3 requests to finish, could take 60 seconds./usr/local/lib/

I looked online and found some people had issues with mysql gem.
But i did check my gems and have mysql (2.7) installed.

Any ideas how to debug?