[SOLVED] Problems whit Wordpress 3.0 using Atahualpa 3.5.1

Since I updated wordpress I've been having lots of trouble with the theme. I edit the theme options and don't see any changes in the site. Problems with the page menu that looks nothing like the options I set and had before the upgrade, problems with the post footer which has a completely different format now, and most important the images in the excerpts are no longer aligned next to the text, but above it and I can't fix it. I already deactivated all plugins, saw no changes and activated them again. I don't have a backup of my database to revert back to a previous version of wordpress. Any suggestions? Please...