When I sync my blackberry with the desktop manager it shows up an error "Duplicate Records found in Calendar"...

As well the blackberry is running slow!

How do I go about fixing this?

Thanks

1. remove the duplicates from the calendar, or delete your calendar data, per this FAQ. How to Clear/Delete all your Address/Calendar items at once - BlackBerryFAQ

2. With your BB powered on, remove the battery, hold for 30 seconds and replace to reboot. Read this: http://www.blackberryforums.com/gene...-logs-sms.html

Good luck.