outlook.exe keeps running after closing application

One of my users have Windows XP with office 2007.
In the past 2 days she is having a problem opening outlook after closing it. Checked event viewer and was giving messages of application hung and office 12 and outlook.exe was part of the errors.
Repaired office, but didnt work. Uninstalled and reinstalled office but same problem.
Checked task manager and sure enough it has more than one outlook.exe processor running. When ending one or some of them outlook will pop right up and some times have to end all processes in order to restart outlook.
Also, was getting the error attached when trying to open it after closing.
Also, ran trend micro and malware software but both came back ok.

Any ideas why this happened and how it can be resolved?

Appreciate the feedback.
Deleted Politics Zone from the cross-posting and added
Microsoft Office Suite
WaterStreet, June 2, 12:29AM EDT

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Meis75Author Commented:
Another note is the archive folder is viewable under the mail folders list in outlook but cannot expand it. User experienced problem today.
open up Control Panel > goto MAIL> Delete any User Profiles (backing up any emails or contacts is assummed) > delete any profile listed. restart PC go back to Profiles and setup an new user profile for the user.
Meis75Author Commented:
I tried deleting the profile, rebooted and tried creating it again but no luck. Same problem, it will not open a new outlook screen after exiting out of the previous one unless a processor is ended.

Try a new windows user profile (or a different win user on the same machine) and see how that behaves.

Check for any Office updates, too.

Alternatively (so when entering the desperation mode), wipe the disk. Sounds bold, but I noticed that even if you uninstall Office, it doesn't really delete everything, and being so tightly integrated in Windows, you never know what really causes it.
I often found it faster to just start from scratch instead of wasting hours searching for a fix, unless you have no image or multiple apps to install.

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