Since our RHEL6 server got its last samba update to 3.5.10-125 (sadly I don't know the previous version) our last DOS machine (MS-DOS 6.22) is not able to access shares correctly. When entering the DIR command on the DOS machine an infinite loop of the first existing directory entry is shown. The Windows machines (XP and higher) do not have any problems.
*** This bug has been marked as a duplicate of bug 2662 ***