The msamapi32.dll error indicates that a prior version of the Office 2007 beta was installed and then uninstalled.

Try this - close Outlook, rename the MSMAPI32.dll to .old (do NOT touch the mapi32.dll file) the restart Outlook. Does the performance improve?

--�
Milly Staples [MVP - Outlook]

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After furious head scratching, Patrick Keenan asked:

| Hello,
| I've just adopted a pair of machines with Outlook 2003 where the user
| has a 540-meg, 25,000+ item online inbox. Outlook has been set to
| leave messages on the server forever and the user never empties it.
| Very lately, Outlook started crashing at startup in msmapi32.dll,
| Outlook will restart, and cycle till you get tired of it.
|
| Eventually you may be sent to an MS page citing an error with WinFax,
| which has never been on these machines.
|
| The only way I can find around this is to create a new profile.
|
| These don't crash, at least until Outlook connects to the mail server
| and gets close to finishing downloading the mailbox. Downloading
| the online inbox takes at least five hours, and once it completes or
| gets close, Outlook crashes and will not run until a new profile is
| created. That one is fine until it connects.. and so on. Both
| machines behave this way.
| New PST files don't help.
|
| Apparently, there's an issue with larger downloads like this. I'm
| going to clear out the user's mailbox and change retention to a few
| days. Anyone have any other tips?
|
| Thanks!
| Patrick Keenan