Since I've bought my laptop one year ago Imovie 9 doesn't work. It always quits unexpectedly right at startup. I' using OS 10.5.8 and downloaded all the updates there are, I've searched with google and nothing really worked. Any idea what I could do?

And here's the error message:
Process: iMovie [2763]
Path: /Applications/iMovie.app/Contents/MacOS/iMovie
Identifier: com.apple.iMovie7
Version: ??? (???)
Build Info: iMovieApp-5850000~26
Code Type: X86 (Native)
Parent Process: launchd [133]

Interval Since Last Report: 1242193 sec
Crashes Since Last Report: 10
Per-App Interval Since Last Report: 0 sec
Per-App Crashes Since Last Report: 7

Date/Time: 2009-10-18 19:06:00.716 +0200
OS Version: Mac OS X 10.5.8 (9L31a)
Report Version: 6
Anonymous UUID: EF99D74B-AE06-4228-8955-DADB93689173

Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Library not loaded: @executable_path/../Frameworks/AVCVideoServices.framework/Versions/A/AVCVideoServices
Referenced from: /Applications/iMovie.app/Contents/MacOS/iMovie
Reason: image not found