Help! I'm desperate.
Last week my WordPress site was shut down by my hosting provider for overwhelming the CPU. They've reactivated the site, but given me only a few days to find and resolve the problem. They keep pointing to WordPress, and my own troubleshooting reveals that it can only be WordPress.
The site is http://quarkvsindesign.com. As of the 17th, it has been hitting 99% CPU usage on all four processor chips on the server. I don't have the history prior to that, but I'm told it was hitting high points below 10%. The host's server logs say the CPU usage is due to /usr/bin/php, but they can't be any more specific than that.
In troubleshooting, I've disabled everything PHP except WordPress Strayhorn 1.5.2.
It's not a hacked install, and I took the templates down to absolutely barebones in the course of troubleshooting--a solitary index.php and a single.php, no header.php or footer.php even. Traffic didn't spike on the 17th, and the site's overall traffic is only about 13% more than the previous month--it's not enough to cause the CPU time to increase tenfold.
I'm a level-headed and experienced technical troubleshooter (not a programming or network pro, however), but I'm completely lost here. I've tried disabling plugins (nothing atypical there anyway), with abosolutely no change. I even rolled the posts published since then back to draft status with no change in CPU usage. Everything but WordPress has been disabled, and the CPU usage is still astronomical.
I would appreciate ANY help on this. Thank you.