iBook Fix for Activity Window

I know this isnt my usual type of blog post but I thought Id enrich the internet with some useful info for mac users as recently Ive been searching google for stuff I never used to, and finding some great stuff. So hear is some information for the Information super highway. If your a regular reader of this blog, please feel free to look away now. PROBLEM: Activity Window wont open, it blinks on the dock then shuts down ANSWER: The Disk permissions are set incorrectly if your in administration account (if you dont know you probably are) so go into the applications folder in the hard drive then to the utilities folder and into disk utility then "repair disk permissions", note this takes forever I left it to do it over night and turned the screen off. This should fix it.