From a command line - all I mean is interacting with the shared drive using 'dir' and 'cd' to move through the tree structure, and potentially using e.exe to open text files.
Okay, I mounted the drive, but did not open the drive object. Then, I did as you suggest, using 'dir' and 'cd' to move around, in both shares. No problems. So I opened a few text files, and that worked, so I tried a few ZIP files with the archive viewer. Again, no problems. Then, I tried the drive object, and it opened the initial tree, but when I tried to open a sub directory (share), it froze (same as before).
After a reboot, I attached the drive again, and tried to open FM/2. It crashed immediately with a TRAP 0008, but it didn't tell me what trapped. After another reboot, I tried FM/2 again. This time it did not trap, but when I opened the SAMBA drive, and a share, it froze.
Hope this helps...