Wow! thank god Im not alone, i have been installing and reinstalling damn quicktime and its plug ins for 2 days straight. Repaired the permissions and all sort but still no luck, deleted all third party plug ins and still no luck, it looks like it has got something to do with 10.6.2 because fresh install of OSX cured the problem.
The only thing that defers on my mac is that I have a big question mark when i try to load trailers, stating that I have a missing quicktime plug in, which i dont.