Microsoft has a update may fix this issue. This post may give you details.
Vista Wireless IssuesVista: Common Problems with 802.11 Wireless ... Inability to Connect and the wireless doesn't receive the single. 1) It could be the Wireless adapter driver
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Daethian" <foreverpurple@xxxxxx> wrote in message news:1188742472.978123.144070@xxxxxx
I have been using my Vista laptop wirelessly on my home network for 2
months without issue all through out my house. Last week it stopped
connected all together and then when I finally got back connected, it
drops the connection every few minutes. This happens even when I am
10 feet from the WAP. I haven't changed anything and at times it will
stay connected uninterrupted. Like last night it was fine and this
morning it is being sketchy again.
Any ideas what's going on?