Mac OS X : suddenly disappear Chinese Input Methods

This is the method to solve the problem

(1) Create a newuser and see if the Input Method can be selected in International Preference

(2) If the newuser can access the Input Method, then it is preference setting problem

(3) login the newuser and copy the following files from folder ~/Library/Preferences to in a common folder
com.apple.systempreferences.plist
TCIMHaninUserDictionary
com.apple.inputmethod.TCIM.plist

(4) login the olduser and copy the above files back to ~/Library/Preferences

(5) Reboot Mac
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