I got a strange problem today, it has always worked good on my webpage. But today when i looked in my news folder http://www.husnes-pitstop.no/siste_nyheter/ down at the bottom , some of the older news had changed out of formating , just look at the link and you will understand the problem.. What could be the cause for this?
While I can see the problem, it's hard to say what's changed without having a baseline. However you should run the site through the W3C validator - I can see a number of errors (the validator reports 63 Errors, 15 warning(s)) which should be cleaned up first. It's possible one or more of those errors are causing the layout issue.