I tried to upgrade to 2.2 but ended up with a broken installation. After getting sound advice from you guys I was able to restore my 2.1.3 installation by reinstalling fresh files, aside from wp-config, plugins, .htaccess.
I also had to reload the theme i was using because the original did not work.
However, when I try to update permalinks it keeps telling me that the file is unwritable. I tried using the original file and a new file. Even when I change chmod to 777 I still cannot write to it.
Also, on my front page the internal links to my posts do not work. I think it's related, but I'm not sure.