Try one of the following.
1. Install the latest firmware for the router and driver for the NIC.
2. Disable IPV6.
3. Disable auto-tuning.
Vista IPCONFIG and Network SettingsHow to disable Auto-tuning on Windows
Vista How to disable TCP/IPv6 How to remove IPv6 and Tunnel completely on
Vista How to disable ICS public connection ...
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
How to Setup Windows, Network, VPN & Remote Access on
"V Green" <firstname.lastname@example.org> wrote in message
> When resuming from Sleep, Vista Home Prem.
> about half the time does NOT request a new IP
> from my wireless router and uses the one it was
> using last - often stomping on an IP already in
> Any tips/setting on requiring the OS to release/renew
> EVERY TIME when resuming from Sleep?