Ok I'm running several sites from a basic Hostgator package and just recently I wake up every morning and my sites all display 500 errors. It's because there are too many server processes, so I have to keep killing them every few hours. Trouble is, I can't do it when I'm sleeping, and I'm losing money. All of them are pointing to my wordpress index.php of my main site, but hostgator can't determine the problem and I have no idea about this stuff. The only plugin I can think of was a wordpress/IPB bridge, but it never worked and it's disabled. However I did merge both my IPB and Wordpress databases in to one master database for the non working plugin. Any ideas?
Checked your site logs? Also check your apache logs, is it a dedicated server or just shared hosting? I highly doubt that hostgator can't determine the problem.
You can setup a cron job to check the process list every few minutes and kill the index.php process. Had a site that was having the same problem so wrote a script to check the process list "ps auwx" looking for index.php for that domain. Every 5 minutes the cron job would call the script and kill the run away process. Hosted at HG as well.
Thanks for the help. I simply completely reverted the plugin and it worked. It was obviously doing something dodgy even when disabled.