Hi
I too had the same connection problem with the DisplayUnit comp. stalling at Reading airport reading index file.
After being trouble free my problems started when I did win7 reinstall on DataProvider comp. and a upgrade from XP to win7 on Dislayunit Comp.
A solution I found on the internet was to disable on the DataProvider comp.the following "Large Send Offload(IPV6) which you get to by going through
next steps.
Do this before trying to open DisplyUnit.
1 Network & Sharing Centre
2 Change Adaptor Settings right click for properties
4 Configure
5 Network connection box Advanced
From dropdown box select Large Send Offload(IPV6)
From Values dropdown box select disabled then OK when you get back to Local Area Connection for a brief moment a red cross will appear
That's it you can now open DisplayUnit.
Or in my case I can BTW This dos'nt permanently disable (IPV6) I have redo it after every comp. switch off.
It was good to get EFB working again its a must for me.
Brian