After upgrading my MacBook Pro to Leopard I get an alert every single hour that says 'PreferenceSyncClient' has unexpectedly quit. Searching around Google and the Apple site I can find absolutely no reference for this application/service. I'm assuming it must be an Apple file ... I am wondering if I just need to track down a copy of it and replace mine -- is that safe? File is located here: /System/Library/CoreServices/PreferenceSyncClient.app/Contents/MacOS/PreferenceSyncClient Exception Type: EXC_BAD_ACCESS (SIGBUS) Any ideas of where to start looking to solve this problem?