WordPress pages load slow, erratic behavior

I have a couple sites running wordpress. Using wordpress was so easy, I converted a site I manage to wordpress. I’ve had no problems whatsoever with my site. The one is having problems. I had noticed quirky behavior in the past month. One behaviour in particular was that I couldn’t get onto the wp login page. I ftp’d on, renamed plugins to plugins.old and blamed it on a gallery plugin. Now, I’m thinking there’s another problem. Currently, when I go to the site, it takes forever to load the blog. Moving through the different pages takes forever also. And I had one person at the organization say that clicking on one of the pages takes them to the old site (which I’ve left on there, but use a little javascript to redirect to domain.com\blog).

Our host is Sprint. They did have a ‘one-click’ install, which was version 2.7. I then upgraded to 3.03 and now at 3.04.

I can access the site via wp login and I think I have a backup of a couple key config files, like index.php. I have not gone in and hacked in the php files. Should be the same as from installation/upgrade.

Any thoughts on troubleshooting? I could reinstall, but I’d hate to have to recreate everything.

http://www.edistoriver.org

Thanks,
Chris