"Connection activation failed: Device not managed by network manager"

[sumatheja]

Hi All,
         I'm using dell inspiron with fedora 13. With great difficulty
i have installed drivers for the wireless card. Now it does detect the
network and in fact i was able to connect to the network once. But
after rebooting it's detecting the wireless network (activated) but
unable to connect. When i tried restarting network service its
throwing the error pasted in the subject line. Any help on this would
be appreciated.