Problems with samba client

I have a small network with shared folders and I can't get Mageia to recognize it.
When I go to Dolphin - Samba shares, it says that there are no workgroups available, when I try the shared Windows folders in Control Center, it doesn't show a thing. I can work with the network out of the box in all the other distros I tried, even in Mandriva 2010.2. The curious thing is, that when I let Mandriva to update all the packages, it also stops working with the network, but Dolphin shows a different error message than in Mageia, so these things might not be related.
Any suggestions on what might be causing the problem?
When I go to Dolphin - Samba shares, it says that there are no workgroups available, when I try the shared Windows folders in Control Center, it doesn't show a thing. I can work with the network out of the box in all the other distros I tried, even in Mandriva 2010.2. The curious thing is, that when I let Mandriva to update all the packages, it also stops working with the network, but Dolphin shows a different error message than in Mageia, so these things might not be related.
Any suggestions on what might be causing the problem?