[galaxy-user] jobs not running on main server

Hello,

I uploaded a couple small files via ftp to do some basic text manipulation on them in the main galaxy server. I have queued up several jobs (including just importing the files I uploaded into a history) but after two hours of waiting they are still gray and "waiting to run." I have been using galaxy regularly lately and have never had to wait very long for a job to start running (usually a matter of seconds). I am not above my quota so this is not the problem. Is there something else I need to do or is there a problem with the servers that would explain why jobs aren't being run?

All the best, Jake