Ah, thanks!
"The time on my device is incorrect
1. In the clock options, click Set Time.
2. Try performing the following actions:
• If you have traveled to a different time zone, set the Time Zone field to display the correct time zone.
• If you have set the Date/Time Source field to Network, try setting the Date/Time Source field to BlackBerry."
This is from the Help menu in the Clock app. Let me know if it helps
Posted from my CrackBerry at wapforums.crackberry.com