For now I wil be using this basic theme until I find something else. The blog was very slow and I could not find out what caused it. I actually messed up my server trying to fix it. Thank god for AMIs! It turns out that the problem is the plugins and theme so now I use this basic theme and just the necessary plugins. Twitter tools was the one that most clearly made the site slow. It could just be because I use suPHP but I never had any speed problems when I hosted on domeneshop.no, which also runs suPHP.
EDIT: Edited the theme a little and removed some stuff. Now the theme is a little faster and usable.
EDIT2: And then a beautiful word popped into my head. Cache. So installed some cache plugins. I also disabled Twitter tools again . It very clearly slows the page down.