I still occasionally (i.e. it's not as frequent as in the betas) have a problem where Vista won't connect to my wireless network.

I had it today. I have my Vista desktop and my Vista laptop. Both are on my wireless network.

The desktop goes to sleep. Later on, for some reason, it will not connect to the wireless whereas the laptop does.

When I say "will not connect", what I actually see is a;

"Unidentified Network (Local Only)"

message and also if I try and ping anything I get;

"PING: transmit failed, error code 1231"

I can find myself stuck with this for ages.

I tried two mechanisms for fixing this today and they did seem to get me around it. One is taken from Steve's blog post here;

Making Vista less aggressive...

and the other was taken from this KB article here;

Windows Vista cannot obtain an IP address from certain routers or from certain non-Microsoft DHCP servers

This fixed the problem for me today but whether it'll stay fixed I'm not sure yet and I'm not sure which action "fixed" it.