[Samba] options to use for dos clients ?

[Aaron_Colichia at Dell.com]

DOS 6.xx clients are exhibiting strange behavior

If I try to copy a file with

s>copy file.txt s:\newstuff

I receive a "general error" with the classic "(a)bort (f)ail (r)etry"

But if I copy the file with

s>copy file.tx? s:\newstuff

This works fine.

Could this be attributed to my options in smb.conf ?