Calendar appointments are off by one hour when sent from my blackberry

Have you checked the local time zone on the device settings?

Yes. I'm using Eastern Time on my blackberry.

Is the Exchange server on Eastern time?

Yes, the Exchange Server is on Eastern Time.

Hmm... It really sounds like a problem on the device itself. Make sure your Blackberry time setting is synched with the network.

Where would I check for that on my blackberry. Also the other users on the BES Server are having the same problem.

OK, that helps. Have you made sure that your BES has the latest DST patch?

Also, on your machine,
Go to Outlook -> Tools -> Options -> Calendar Options ->Time Zone.

Make sure "Adjust for daylight saving time" is checked.

Hi, assuming you have Exchange System Manager installed on your BES install Exchange SP2 (on the BES) and any applicable updates (e.g. kb926666).  If you have firmware 4.2 (Options > About) or lower you may need to apply the device DST patch.  Also if you aren't running BlackBerry Professional you should update BES 4.1 to SP6 and MR4 as this includes a DST update for the BES database.

This link contains the device DST updates:
http://www.blackberryforums.com.au/forums/microsoft-exchange/1748-how-prepare-bes-microsoft-exchange-support-dst-changes-2008-a.html

My BES isn't installed on the same server as my Exchange Server.  I have Exchange System Manager installed on the same server as my Exchange SP2.  So do I just need to update the server with BES on it?

If you are not using BlackBerry Professional you should upgrade to the latest service pack.

Where do I find the service packs to upgrade from 4.1.2.0.25

Ok, you are way out of date as you on have SP2.  Use the SP6 download link below:

http://www.blackberryforums.com.au/forums/blackberry-announcements/2445-bes-4-1-service-pack-6-exchange.html

Also make sure you are logged on using the BlackBerry Service Account (e.g. BESadmin) when you run the service pack update (also logon with this account after the restart).

Do I have to do anything after Installing SP6 after the restart?