Here are some bugs that look somewhat related: Bug#406162: network-manager-kde: KNetworkManager hangs on first ...
#427171: knetworkmanager hangs when querying kwallet during ... #422752 network-manager: DHCPRELEASE sent *after* interface is disconnected. (only on the timing of dchp requests) #460828 network-manager: Odd behaviour for wpa authentication (I think I got double prompts for password during each of my attempts to connect) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]