Outlook 2007 Running on Windows 7 hands on send.

[Wadoki]

I have 3 Laptops running Windows 7 64bit Pro, the only 3 Windows 7 machines on my network. They are running Outlook 2007 and both Windows and Office 2007 are as up-to-data as possible. They used cached mode when away and connect to the Exchange Server in online mode when in the office. It is a Windows network with Active Directory. We use WatchGuard firewall and Kaspersky anti-virus.

Here is the Problem: Outlook works properly other than routinely the status bar shows that it is sending and receiving (which shouldn’t happen at all when directly connected to the network) and will hang at a percentage different for each user. It will not show an abnormal use of resources but it does seem to hold the outgoing mail for 5 to 10 minutes. Eventually it gives up, shows connected to Microsoft Exchange and then the outgoing mail delivers.

I have deleted and reinstalled Office, I have deleted the offline pst files and let them rebuild, I have verified that the units can see the Exchange Server both UNC and ping. I have looked over the logs and I can’t find anything to lead me in any particular direction. I have been searching here as well as the web and I can’t seem to find anything helpful.

Any help would be appreciated.