I've read your Knowledge Base article # 331923 for
Outlook Express 6 about lockups on switching identities.  

I've verified that I have downloaded the SP1 for version
6.00.2800.1123, prior to my current version of OE 6
update of 6.00.2600.0000.  My problem with switch
identities problem continues; didn't fix the problem.  
I'm currently running Windows XP Professional, OE 6
version 6.00.2600.0000 (XPCLIENT.010817-1148.  

The symptom:  When I switch identities, OE 6 appears to
close the application to attempt to switch to the other
identity and appears to have closed the OE application.  
I cannot get back into OE 6 at all, nor bring up the
previous identity.  In short, I have to reboot my system
to get back into the OE application.  

I've had this problem since my initial purchase of the
product some 1 year + ago.  The files that downloaded
with the OE 6, SP1 patch (6.00.2800.1123) are:
        directdb.ddl
        inetres.ddl
        msident.ddl
        msoeacct.ddl
        msoeres.ddl
        msert2.ddl
        oeimport.ddl
        wab32.ddl

Any ideas on how to fix this Outlook Express 6 problem?

Thanks.