IE crashing while viewing imbeded movie


im starting to have a problem that when im using ie and viewing a movie withing the browser it plays half way and then the app crahses and quits by its self , that has happend a few times so far, the first time was when i was viewing the new ibook moive from apples website and its also happended while viewing movie trailers from apples website, any one got any ideas, ???
this problem first started to happen in os9.1 but it also notised it in os x, i have also tried to use icab but i dl and ran it and it doesnt have the qt plug in, n i dont know how to get icab to see the qt plug in.