why my Google chrome always crash

I haven't had any problems with chrome..Has been using it for quite a long time now ... except the fact that it is a little late to start up than Firefox,there aren't any problems that bothered me during that period.... Anyway i think there might be some download manager programs active...Does it crash when you are browsing or when trying to download a file???If it is the latter,then stop any active download managers and then try... Else i suggest that you re install it after removing it from your system..