Hi,
There were several "calendar" fixes in the following update:
http://support.microsoft.com/?kbid=937494
Can you install this update on both manager and delegate machines to see if
the problem goes away?
If this doesn't fix the problem, are both users in Cached mode? If either
one is in cached mode, can you see if this problem occurs when they are both
in Online mode?

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greg mansius [MSFT]
Microsoft Office Outlook Support
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> Hi,
>
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> Thanks
garryb - 23 Jul 2007 14:24 GMT
Hi Greg,
Thanks very much for the reply. I already have the hotfix installed.
As for the cached/online mode - is this something that a user (i.e. me) can
look at, or is this an exchange server admin job?
Additional info - our administrator can basically work on everyone else's
calendar, so it seems specific to mine.
> Hi,
>
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Greg Mansius [MSFT] - 24 Jul 2007 18:52 GMT
Cached/Online mode is a client-side setting. If the lower-right corner of
the Outlook status bar says "Connected with Microsoft Exchange" then you are
in Cached mode. If the lower-right corner of the Outlook status bar says
"Online with Microsoft Exchange" then you are in Online mode.
Can you check to see which mode you and your administrator are running in?

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Thanks
greg mansius [MSFT]
Microsoft Office Outlook Support
This posting is provided "AS IS" with no warranties, and confers no rights.
Please do not send email to this address, post a reply to this newsgroup.
> Hi Greg,
>
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>> >
>> > Thanks
garryb - 30 Jul 2007 16:02 GMT
Greg,
We are both running "Connected to Microsoft Exchange".
Garry
> Cached/Online mode is a client-side setting. If the lower-right corner of
> the Outlook status bar says "Connected with Microsoft Exchange" then you are
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> >> >
> >> > Thanks