I had WP-2.3.3 installed on this server account previously, but under a different db name and in a different directory, so I don’t think that it’s carryover traffic.
When I called the host, they made it sound as if it wasn’t page requests from people surfing into the site, but rather a code problem, which was looping or something.
I’m not a coder, so bear with me. I’m trying to relay this information the best that I can.
The usage graph showed an average visitor, or page load, of less than 100 per day, for the last 6 months. After the installation of WP-2.5 it shot up to 10,000 in a few hours and resulted in a db disconnect.
Oh well…