Virtualmin/Webmin can't be loaded in browser

Is there any suggestions on how I might resolve a broken Virtualmin. Not sure how best to debug the issue.

A browser will just time out when trying to reach the control panel. SSH works, WinSCP (which is a lovely drop and drag solution) works, and the websites seem to be working. There are about 30 websites stranded on the machine which we wanted to rebuild after moving the sites to another machine. It would have been a bit easier with the control panel. The machine has been DOS attacked more than once and I think we know how to build them better with the very bare bones install and not all the GNOME crap I once used. I believe it is a CentOS 5.4 version. I have looked at the processes but may not be experienced enough for that to be all that helpful. - Scott