It's suddenly taking an eternity to access my blog. It's extremely slow in IE and in FF it takes minutes to get to the site. Occasionally I'm also getting the error message "Request error (invalid_request)" The problems started on Friday last week without any changes done to the site. I've checked with my hosting service, Hostgator, and they don't see anything unusual with my site.
The site has previously always been fast and I've tried to look for some possible errors. I made a regular post on Friday and the site was running fine. Yesterday I tried to access it and noticed the problems. I've disabled the latest post and it made no difference. The latest plugin installed was Lightbox 2 by M3nt0r but that was a couple of weeks ago and the plugin has been working without problems. I've disabled it and it made not difference in speed. The other plugins I'm running have been activated for many months and I'm not using any exotic or advanced stuff. I've accessed the site, after a LONG wait, and looked on the source code but not noticed anything unusual. Hostgator is running Linux, PHP 4.4.2 and MySQL 4.1.19. I'm unaware of any recent changes they have done. Their support didn't mention anything to me during my chat with them. My site is running as a subdomain to my wife's site and her site is running fine. So I don't believe it's Hostgator's fault. She's also using Lightbox 2 so I don't think that's the problem either. I've tried to access the site on three different computers and the problem remains the same.
Can anyone plese give me an idea of where the problem could be? There is a more recent upgrade, 2.0.2, that I havent applied. Could that possibly be the problem?