I know people have brought this up before, but I can't find any solutions that have worked for me yet. I can set up my WP installation fine (v 2.5), install my theme and plugins, and make posts, but after a day or two it always reverts back to the default theme and deletes all posts except "hello world," which it has to recreate because I delete it on every new WP install.
My WP installation info:
Google Sitemap Generator
I know I can change the name of my theme folder to "default" so that it can only revert back to the theme I want, but what about the problem with deleted posts?