We have a user who has a new Windows 7 32bit machine desktop running Outlook 2010 v14.0.6112.5000. When he sends a new email no matter where it is going or what the content it sits in his outbox for a long period of time. Send/Receive doesnt seem to force it to go it just appears to catch up after a period of time. I have recreated his oulook profile several times but still get this issue. We have change the network cable, checked all the network settings, latency is under 20ms to the exchange 2003 server. This is the only user at the office having the issue so we cant see why it is affecting only him. Nothing is showing in the event logs to help point us in the right direction. When it sits in the outbox outlook often shows not responding and wont let you use it until it comes back to life. Right click on the icon with ctrl and connection settings shows its connected okay without failures via tcp. when it hangs we can still browse LAN shares without an issue. Firewall is turned off on the machine and we have tried stopping the Antivirus services. Running out of ideas so has anyone any suggestions?