Exchange 2013 - Multiple Connections to Public Folders

Hi,

I have the following scenario:

Exchange Server 2013 DAG + 2x load balancer in front.

1x Client Windows XP SP3 + Office 2010 SP1 and all updates.

It's about 3 mailboxes:

UserA - usera@domain.com - Default Public Folder Mailbox "PF_AAAA"
UserB - userb@domain.com - Default Public Folder Mailbox "PF_AAAA"
UserC - userc@domain.com - Default Public Folder Mailbox "PF_AAAA"

The following problem:

If I connect a single user in Outlook, everything is wonderful.
Email push when you come. Public Folders go.

If I set up more than one user in my Outlook profile. So all three accounts, for example, then Outlook always tries to connect to the same Public Folders Guid. But can always build only a single connection. Then I have the Outlook icon in the system tray the hourglass and my emails are not displayed in the Inbox.
I can not access the public folder then.

As soon as I connect only one mailbox is all wonderful.
i have Tested everything but I am at my wits end.

when I add a separate Public Folder mailbox for each user, I can with all 3 mailboxes simultaneously access without problems. If I have it assigned to the users accordingly. Example:

UserA - usera@domain.com - Default Public Folder Mailbox "PF_AAAA"
UserB - userb@domain.com - Default Public Folder Mailbox "PF_BBBB"
UserC - userc@domain.com - Default PublicFolder Mailbox, "PF_CCCC"

Given that many people using up to 10 mailboxes, and people automatically get mapped on the delegation mailboxes, so I can not set up a public folder mailbox for each mailbox.

I hope someone can help me further.

Thanks and Regards

Peter Kerling