I installed WordPress 2.5 on the main site. Rather than wait for the scripts on the server to update, I just installed a plugin which will do the upgrade for me. It was pretty painless. No problems with the theme.
I don’t like the default admin page for 2.5, but I got a plugin which changes the admin page and it is really nice.
I think my WordPress theme, Vistered Little, has ceased development. This isn’t a good thing for me in the long run. I hope someone picks up the ball with development, especially since I’ve read that it is one of the most downloaded themes for WordPress. I’m half tempted to hire someone to make a “Vistered Traveler” theme for me.