Solution
so what if windows firewall is not active at all? we have that same problem, but can not just active the windows firewall on 1000 notebooks.
we have that problem with XP though.
Thanks for this, I followed the steps (excluding the firewall sectrion as our network is centrally managed, not locally on the machine) and it worked 1st time.
We have other users in our company in different 3G suppliers with similair issues, Venturi Web Accellerator causes the issues, not sure if its the same optimiser/accellerator that Vodafone use but one to keep an eye out for.