Vista ticking you off, particulary with TCP/IP Network problems?

Windows Vista ‘TCP Scaling’ is on by default in Windows Vista (along with an IPV6 stack) and is causing difficult to diagnose problems with routers, etc. that do not support or work well with this feature.

To turn it off:
Run a Command Prompt as Administrator
netsh interface tcp set global autotuninglevel=disabled

To turn it on:
netsh interface tcp set global autotuninglevel=normal