Slow gprs connection after an activesynchronisation

[Guest alexweb]

If i make a full reset of my spv E200 i can use the gprs connection (msn, pocketIE...) without any problem. But if i connect the phone by the usb cradle and let the activesync working, the next time I try to use the gprs, it's so slow ! The first time, I thought that it was blocked. Tool long for msn whom can't connect. However, all the gprs and internet connections parameters on the phone are operator's default (Mobistar - Orange Belgium).

My PC is connected to 2 anothers by a switch and all network's parameters are standard (tcp/ip, automatic ip address...). My idea is that a port is blocked on the spv after the activesynchronisation, but where can I re-open it. It's really strange.

Anyone has the prob or can help me ?

PS : sorry for my bad english.