System Preferences keeping crashing in 10.7 Any Help?

[AppleMactablet]

I been noticing some issues with my mac and lion-system pref crashes when i click on a wallpaper or most anything for that matter and launchpad gets stuck in the middle of two pages.

I tried to repair the disk-but it saids everythings good and in lion I cant find any plist to delete.
Any help would be appreciated

 

[saberahul]

Had the problem. Restarted computer. Problem gone.

 

[aikenimagery]

Sys Pref Desktop/Screensaver

Find Sys Prefs Icon in Applications: Get info-make sure 32-bit box is not checked.
I had checked it after entering a Terminal command to allow National Geographic screen savers.
Null command-Lion has no update to this issue, however the above was an easy fix without a need to restart.

Lion seems multifaceted when problems arise-people will have similar problems with different routes to how they may solve them, or how the problems arise within OSX 10.7.