Network manager won't reconnect

[John Wendel]

Fedora 15 - Gnome 3 - on an old Intel based laptop.

I'm having a problem with a wireless network connection. For some 
unknown reason, the connection drops frequently. When this happens, 
network manager prompts for the password (which it has stored correctly) 
and then is unable to reconnect to the network. Rebooting fixes the 
problem, until the next disconnect.

Anybody have a solution?

Thanks,

John