Had a few hours of downtime today due to a corrupted .htaccess file. For some reason wordpress likes to update and corrupt the .htaccess every so often for no apparent reason. I am currently investigating which plugin could be causing this problem. If anyone out there has experience with w3 super cache, i believe it is the root cause of my problems. It appears to keep adding lines for mod_rewrite to my .htaccess right before it goes corrupt. Making the .htaccess file read-only breaks a bunch of stuff so that is not an option. I am open to suggestions.