My Powerbook G4 Titanium is running OSX Tiger and will not open the Date & Time preferences - instead it gives the error message 'System Preferences closed down unexpectedly' with an option to send info to Apple. This is an issue because the date has reset to 1970 and when I start the mac the time is always 04:00. I tried leaving it connected to the wi-fi overnight to see if the time servers would do their thing, but no luck. I'd appreciate some help in solving this. Thanks.