Window 7 ICS problem

Hi,

I have to use my netbook with build-in 3G modem to share internet connection in my appartment. I used ICS that comes with Windows 7 (Home Premium)
After a while might be few hours Internet stops working with errors like those in Event log.

"The DNS proxy agent was unable to allocate 0 bytes of memory. This may indicate that the system is low on virtual memory, or that the memory manager has encountered an internal error."

"The server could not bind to the transport \Device\NetBT_Tcpip_{E4B59B6F-D82A-4344-8B44-98B7D2E719BB} because another computer on the network has the same name. The server could not start."


The name "ARTUR-PC :20" could not be registered on the interface with IP address 77.115.243.17. The computer with the IP address 169.254.115.76 did not allow the name to be claimed by this computer.

The name "ARTUR-PC :0" could not be registered on the interface with IP address 77.115.243.17. The computer with the IP address 169.254.115.76 did not allow the name to be claimed by this computer.

Adter the error I cannot connect to Internet via 3G modem unless I disable Sharing on the modem. Then I can enable it and it works.