I'm running a websites for clients that have blogs attached using WordPress. One however I have noticed a massive slow-down on. The client's main site is running as fast as ever, but the WP blog party is painfully slow. If I restart lighttpd then everything runs fast again for a short time, then it goes back to being slow.
I'm fairly new to WP so I'm not 100% where to start looking. However I have ruled our DNS, and the web server as all other sites run very quickly. It's just this one blog. I've also upgrades to 3.0.2 with the same problem.
I've disabled plug-ins and custom themes to make sure it's not those, however it's worth saying the same plug-ins work flawlessly on other installs.
Any pointers on where to start looking?