My website recently went down and when I contacted my host they told me that apache had to be restarted, something I was running caused the issue and they couldn't be more specific. The only thing that I can think of that I'm recently doing different is I put an ip range whitelist in my .htaccess. Could this have caused the problem? Its about 43,000 lines long. I also have an always use www mod_rewrite but I've had that for a while with no problems.