Installed Lion, change wallpaper, "desktop & screensaver" freeze, force quit, then "system preferences" freeze and need force quit every time

After Lion install, tried to change wallpaper in "system preferences"->"desktop & screensaver" appeared but immediatly freeze, so force quit.
Then System preference pane as it immediatly freezes if I try to open it.  Have to "force quit" each time.
Found many people have the exact issue and highly likely it's the bug of lion.
Anybody found a solution?  Thx.

It has to do with a problem accessing the images on the home>images folder. To solve it, just move its content (iphoto library included) to another place. Then, restart System Preferences. Moving your iPhoto library to another location seems to fix the problem. I am sure Apple will issue an update to correct this problem. But, for now this seems to work for me.

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