Cannot connect to Network.....

Binary package hint: nautilus

I updated to Karma from Jaunty last week, and for some reason, I can no longer connect to the network of shared computers, either on the partition to windows or through the router. I use Places>Network and it should show an Icon for both Windows and Ubuntu, but it only shows one Icon and that is for windows. I click on that, and I get the message....

Unable to mount location....Failed to retrieve share list from server.

Can any body help please?

John.

ProblemType: Bug
Architecture: i386
Date: Tue Oct 20 11:17:23 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/nautilus
Package: nautilus 1:2.28.0-0ubuntu7
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: nautilus
Uname: Linux 2.6.31-14-generic i686