I have a problem with a blog: I upgraded it the other day to 2.3 Wordpress and had to have my host do a restore because of troubles. My home page is 90% not posts because they are offers I need kept in place on the home page. Everytime now that I try to edit the home page I get a database error and have to have the host restore the database. A real headache. ANy wordpress gurus out there? freestuffhunter.com is the site
I would downgrade to the most recent 2.2 version. I have heard nothing but bad things about 2.3. Also try disabling all of your plugins, as those seem to be having the most problems with 2.3. You can get older versions here: http://wordpress.org/download/release-archive/
Roll back to the previous version before you corrupt the db with too many sql retrievals. the upgrade isn't mandantory and not "very" stable.