Calendar Appointments on Blackberry 1 hour behind

We have noticed that recently, when someone invites a  user to a calendar appointment, the time shows up as an hour behind on their Blackberry after they accept it. I can only assume this has something to do with UK daylight saving, which began 2 days ago.

It seems there is a cdo.dll which needs to be installed, but I have been unable to establish which version of the file I need, and whether the same version is used globally.

We are running BES 4.1.6.9 and Exchange 2003 SP2. Someone has also installed a version of Outlook 2003 (I know its a bad idea!) on the Exchange Server.

Any assistance would be appreciated
Ben CampbellIT User, Manager, DiplomatAsked:
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
Do you have the DST patches applied to the devices:
http://www.blackberry.com/DST2007/patch/index2.shtml

You can use the Patch  Manager the update everything from your BES server
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Ben CampbellIT User, Manager, DiplomatAuthor Commented:
How do I know if I have got it installed? I am also a bit concerned as the handsets are all pretty old - 8100's and 8310's. I don't want to break them!
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
Yes if they are old my guess is you don't have the DST patch installed.    I would get the Patch Manager and apply the DST patch.   You can also apply the patch directly of you have the usb cable for the Blackberry...and connect it to a workstation and update it.
I recommend looking over http://www.blackberry.com/DST2007/patch/index2.shtml
If not you can wait...by Monday these should be corrected if you do nothing.   The orginal DST change was supposed to happen this coming weekend...that is if you don't want to patch the devices.
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Gregory_VCommented:
The units will take the DST patch or you can load the latest firmware on them by hand, downloading the firmware from the mobile provider..

That will be a safe way of doing it if you're nervous about pushing out updates over the server.

The issue will go away this weekend, but it will come back in Nov ;)
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Ben CampbellIT User, Manager, DiplomatAuthor Commented:
Hmmm, for the sake of a few days, I rather like the idea of waiting. Is the same error going to occur repeatedly if I don't install it?
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Ben CampbellIT User, Manager, DiplomatAuthor Commented:
So DST changes both way is out by a week twice a year since 2007?
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
More like 3 weeks...
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
This mess all started back in 2007:   Clocks were set ahead one hour on the second Sunday of March (March 11, 2007) instead of on the first Sunday of April (April 1, 2007).
http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005#Change_to_daylight_saving_time 
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Gregory_VCommented:
yea, you can avoid it for a while, but it will bite you again later ;)
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