testing firefox 3.0 Alpha

hi everybody,
please don't flame me because i'm testing alpha software,
but i was wondering, if other people have the same problem like me:
i use, like the title stated, firefox 3.0 alpha (gran paradiso) and every time i use right click in a webpage (not on a tab) it crashes.
if other people have tis problem too, then i know that it's a alpha problem and not system problem.
this is sometimes annoying when you forget this, and you are trying to use the dictionary.