I also had this problem, when I upgraded to rails 2.2.2 on my production server - 503 error - a very unpleasant surprise. When I manually ran the site with Mongrel, I had no problems. I changed the Rails context to development everything worked again. Since the site sees very limited testing right now, I can live with this for the moment, but I hope the issue is resolved quickly.
Last edited by senihele; 12-04-2008 at 04:56 PM..