Can't load Network Settings from System Preferences

For some reason I can't load Network Settings from System Preferences anymore - it just stalls with the bar showing "Loading Network" and doing nothing. This is happening in conjunction with a new inability to connect to a network printer - it won't show up on the list of printers, even when I manually enter the IP address. Something is obviously mucked up - can anyone tell me what it might be & how I can fix it? Thanks!

I was able to fix this myself by using one of the techniques suggested here for a different problem. Basically I went into Library/Preferences/System Configuration and deleted networkinterfaces.plist, preferences.plist & com.apple.nat.plist. All were rebuilt when I restarted and went to System Preferences/Network and I was able to load the Network Settings. This didn't fix the problem with my printer, but at least it got the settings up.

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    Apologies for the bad formatting on the original posting. Here is the formmatted posting:
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