[Thor]

The main speculation is some radical cleric last year was threatened with deportation, he vowed if he was deported that he would attack Norway.

The other's loosely being talked about is Norway's decision to publish the Mohammed cartoons and its involvement in Afghanistan and its actions against Libya.

Whats odd though about all this is the timing... Today was a government holiday and there were very few people in the area, so if it was a terrorist attack why wouldn't you wait for a normal day to bring up the death toll.

That certainly makes you wonder if its a non Islam related issue, and a crazy one man bomber.