The post is for the DNS-321 - issue is basically the same as we are discussing here ...
Seems we are going in circles. I used to change the samba access mode by editing a saved config from the nas and reapplying it - that fixed all access issues for me (HDX1000 public, updates public, backup private). This change was referred to "hacking"
http://forums.dlink.com/index.php?topic=7435.0by D-Link. Well ... fact is, since Beta 1.08 the config file is binary and cannot be easily changed ... so not a solution anymore.
The feature of unprotected guest accounts is now changed and limited to Open / Public Mode as posted here by D-Link Multimedia Technical Engineer
http://forums.dlink.com/index.php?topic=4950.msg44144#msg44144I use the NAS for deploying updates and storing backups. Backups are restricted while Updates should be public. It is kind of a problem to access two shares on the same network device with different accounts from windows ... I think thats a well known limitation of Windows.