[Bug 280746] New: Once kmail is opened twice (same user, different session. e.g.: Opening a remote session). Messages are not available

[Aitor]

https://bugs.kde.org/show_bug.cgi?id=280746

           Summary: Once kmail is opened twice (same user, different
                    session. e.g.: Opening a remote session). Messages are
                    not available
           Product: kmail2
           Version: 4.7
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: mail at aitorpazos.es


Version:           4.7 (using KDE 4.7.0) 
OS:                Linux

Opening kmail twice (for example through a ssh session) render messages on
kmail unavailable. The original instance is not able to access selected
messages and new instances are opened with a blank folders list. The following
notification is reported for every configured account(I use Spanish so I hope
translation is OK):
"mail at aitorpazos.es: Unknown error. (There is no transaction in progress.)"

After restart, everything comes back to normal.

Reproducible: Always

Steps to Reproduce:
Open kmail as usual.
Log in opening a new session where we can open GUI apps (ssh with X forwarding,
Remote Desktop, etc)
Launch kmail
Try to read any mail

Actual Results:  
Errors are notified and messages are not available.

Expected Results:  
Messages should be available on both kmail instances or the second kmail
instance should be refused to start.

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