Mac does not list all folders in a SMB share

Question

Hi guys, this is a bit of a weird one and I've tried everything I can think of.
In our house we have a media centre running Windows 7. It has several shares, one of which we'll call folder "X". Folder X opens correctly on the media centre, and any other Windows machine perfectly. Almost every other machine in the house is running OS X 10.6, and one of my housemates today noted that some of the folders inside of folder X were not listed on a Mac. So far we've tested it on 2 Macs and 2 Windows machines, and everytime the Windows machine lists all folders inside of X, where the Mac does not. The weird thing is, it's cutting them out alphabetically, so it's basically from D through to I that are missing, all in all there are 30 (out of 160) folders missing inside of Folder X...here's what I've tried.
On the Windows 7 machine:
-Restarted server service
-Removed Share X and re-added
-Checked share permissions on folder X
-Checked permissions on folder X, propagated to all child folders just in case.
-Restarted machine after every change.
On the Macs we haven't really tried much as there's not much we can think to change. We've tried Finder, Path Finder (which I'm guessing will be exactly the same), restarting, removing from workgroup and re-adding...I can't think what would cause such a weird problem.
To make things harder we don't know exactly when it started happening but the OSX machines definitely used to list the folders and it happens on more than one mac. which I guess makes me think it's something on the Windows client. The 30 folders are not using any nonstandard characters, some are only a few letters long.
Ideas on a postcard!?

Answer 1

Reporting the same problem.
1. Have Windows 7 MediaCenter with file sharing set up properly (LM+NTLM Authentication allowed and 128-bit encryption disabled in security policies).
2. Test folder ("C:\income") and all the subfolders' owner is 'Guest', full access is granted for everyone.
3. Connecting to MediaCenter from MacBook with Finder by pressing Cmd+K and typing smb://ip-addr/income
4. Finder connects successfully, but some sub-folders and files are not being listed.
Workaround:
5. You can open a not-listed folder directly by pressing Cmd+K and typing smb://ip-addr/income/some-invisible-folder
6. Voila! You're inside invisible folder.
In the meantime, i can see all the sub-folders on a Windows XP client machine, so i can make a conclusion that all of these 'invisible' sub-folders are actually accessible by Finder, but in some reason are just not being listed on Mac.