integration with Outlook 2003: slower on XP than W2K? after upgrade?

[Pieter]

Hi,

I have a VB.NET (2.0) application that integrates with Outlook 2003. I have
windows XP SP2.
The users had Windows 2000, and Office 2000. They upgraded (!) to Office
2003.

But:
- an action that takes 0,5 seconds on my pc, takes them 4-5 seconds
- an action that takes 2,5 seconds on my pc, takes them 8-9 seconds

So for a test we completely desinstalled Office 2003, and did a full
re-install of 2003 on a system. Performance increased with +- 30%: times are
now 2,5 seconds and 6 seconds. But still much more than my 0,5 and 2,5....

What's the reason of this performance-problem? The user do have as much RAM
as I, do have a better processor! (I have a stupid Centrino, they a P4 with
HT).

Will installing Windows XP the solution? Does Office 2003 perform better on
Windows XP than on Windows 2000?

Any help our hints would be really appreciated!
Thanks a lot in advance,

Pieter

 

[Cor Ligthert [MVP]]

Pieter,

Connection to Exchange over the network?

Cor

 

[Pieter]

yes indeed...

 

[Cor Ligthert [MVP]]

Pieter,

Are you than sure that you are not one of those special persons that got
from your administrator a connection on a 1Gb port?

AndElse

My expirience is that the time to get the startup information from Exchange
server seems sometimes to be endless, while for persons who never clean up
there folders in the pubs (or have very long address lists) it is even
longer.

Cor

 

[Pieter]

I don't even knwo what a 1Gb port is, hehe

Well, I somehow guess it's because of the fact that the clients do have
W2000 and not XP. When you see that they do have a 40% performance increase
by simply re-installing Outlook 2003 from scratch instead of doing an
upgrade from Office 2000 to 2003...

But before I ask the administrator to re-install a pc, I'd like to have some
support for my theory

 

[Brian Tillman]

Well, I somehow guess it's because of the fact that the clients do
have W2000 and not XP. When you see that they do have a 40%
performance increase by simply re-installing Outlook 2003 from
scratch instead of doing an upgrade from Office 2000 to 2003...

Well, if you upgraded Outlook 2000 to 2003 and did not create a new mail
profile, you could see side-effects like you describe or other ones. With
that particular upgrade, a new mail profile is a good idea.

Try creating a new mail profile on one of the slow machines and see if it
helps.