outlook ost file error

I have a client that has been getting an intermittent error that occured preventing  his ost file from being properly saved. Allegedy, this happens at random times even after he's been in outlook for part of the day, so that he has to restart the application to get back into his email. I tried to rename and rebuild the ost file, but I'm still getting the error. He has an Exchange account using outlook 2003 on Exchange 2003.
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bob_the_builderConnect With a Mentor Commented:
Try this anyway....

Close Outlook.
On the Start menu, click Run.
In the Open box, type
drive:\Program Files\Common Files\System\Mapi\LocaleID\scanost.exe

where LocaleID is the locale identifier (LCID) for your installation of Microsoft Office. For example, the LCID for English (United States) is 1033. For a list of LCIDs, see Microsoft Office Help.

Click OK.
Click either Scan all folders or Choose folder to scan. If you click Scan all folders, this may take several minutes.
Select the Repair errors check box.
Click Begin Scan.
Details of actions performed during the scan and repair are saved as a message in your Outlook Deleted Items folder with the subject "OST Integrity Check."

If the Offline Folder file cannot be repaired, you can disable it and create a new one.


To disable the .ost file and create a new one

On the Tools menu, click E-mail Accounts, click View or change existing e-mail accounts, and then click Next.
In the list, click Microsoft Exchange Server, and then click Change.
Click More Settings.
Click the Advanced tab, and then click Offline Folder File Settings.
Click Disable Offline Use.
In the File box, type the path to the file you want to use as the new .ost file. The default file name is outlook.ost. If this file name already exists, you are prompted for a new name.


What error is he getting?


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