System Preferences - Display Frozen

When I attempt to change my display from System Preferences (wishing to stream different photos at 5 second intervals) the dreaded spinning ball immediately appears and System Preferences crashes after several minutes. I am left with one frozen picture which I've actually discarded to trash.
HELP!!!

Ok, this cleared up for me. During the time that things weren't working I was transferring a file from my MBP to my Mini via WiFii. This caused many items related to video to hang: Screen Saver pref, Display Pref, and Front Row all had problems. Once the file transfer completed everything cleared up and started working normally.
What's really interesting is that when I did the transfer via a direct ethernet connection between the machines there was no problem: prefs loaded fine, etc., while the transfer was in progress.

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  • System preferences are frozen

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