I have a similar problem where I cannot browse shares on our Windows server. I have just downloaded and installed Vector Linux 5.9 Standard Gold. In the "Vector Linux - Help Center" documentation, I went to the "HOW-TOs" section, then to "Network and Security HOW-TOs," then to the link labeled "Samba Guide." Tried a couple of things there, but when I start up pyNeighborhood, I am still unable to mount a Windows share. I can see the network, and the domain controller, and I can "open" the domain controller and see the shares, but when I double-click on one of the shares, I get an error message that simply says "Failed to mount."
In pyNeighborhood Preferences, I have a mount folder of /mnt/lan (which does/did already exist, so I did not touch it). In one of the other postings or in the documentation somewhere, I saw where someone had suggested that one require a username and password, but don't enter them. So, I checked the "Always use default username and password" option, but did not enter a default username or password. Still would not mount (I did also try it with my network username and password, but that did not work either). On the "Network" tab in pyNeighborhood Preferences, I have tried unchecking the "Always use msbrowse" and entering the domain name for our network where it says "Workgroup." Still no-go. I've tried a couple of other options in Preferences, but I guess I haven't yet stumbled upon the right combination.
And now this morning I started having another problem -- totally unrelated -- where when I try to click on a news story link on Yahoo.com, Firefox shuts down. Works fine on my Mandriva 2008 computer, and it worked fine yesterday (I think). Anyhow, I should probably post this in another forum if I continue to have this problem. Although, in all honesty, if I don't get the "browsing the Windows shares" problem resolved, I probably won't continue using VL -- and that's not to give anybody a hard time. It's simply that that (browsing the network) is something I need to have and something I don't typically have a problem with with other distros.
edit: The Firefox problem must be something weird with the page the story is linked to because other links do not cause Firefox to shut down -- but as I wrote originally, the same story link works fine with Firefox in another distro.