I was working on setting up ssh localhost for a passwordless login. At about the same time, I also tried to connect to a friend's wireless network. After that, everything went haywire ... first, the system cut itself off. After I rebooted it displayed a message saying KNetworkManager had crashed. Then, after I worked for a minute, it rebooted itself again. This process continued several times before I finally shut it off. I'm now wired to the modem and the system isn't rebooting anymore; however, I still get the KNetworkManager message every time I boot:

HTML Code:
KCrash: Application 'knetworkmanager' crashing ...
sock_file=/home/ etc...
How do I go about fixing or re-installing the network manager?