I am working on the main iBlog website. There appears to be some issues and I am trying to get to the bottom of them.
I have removed WP-SuperCache. There were a list of issues showing up in the Apache error logs from the plugin. I am monitoring the server now and hoping that the removal of the plugin will solve some other issues that were popping up.
A new plugin called W3 Total Cache seems to be very robust. I might install this plugin later today after watching the server.