Information on the "500 Servlet Exception" error message
From EtherWiki
The Resin application server, used by Lunarpages hosting, will sometimes report the following error:
500 Servlet Exception [java.lang.OutOfMemoryError: PermGen space]]
According to Resin's web site this will generally appear when new code is uploaded [1]. It usually takes 15-20 minutes to clear up after the server deploys the new code. Alternately, you can force a redeploy of the JSPs to reset the project.
