Version: 4.5 (using KDE 4.4.5)
Although Dolphin supports ACl's nicely, this is not the case over the smb:/ kioslave.
Steps to Reproduce:
When using the kioslave smb:/ in either Konqueror or Dolphin ACL's are not supported at all, and user/group ownership are faked to show the current local user.
When using smbmount this works fine, owner/group/ACl permissions are all shown correct in Dolphin.
Should work for kioslaves as well.
This is unfortunate as a linux user tends to set the group to the user account, with no permissions (controlled by umask). Windows users will prefer to set a shared group ownership with full permissions. A mixed group of linux/windows user will eventually lead to a lot of files the windows user can not read.
The way to bypass this for shared groups is to create a default (inheritable) group permission using ACL's. Samba supports this fine, and when unixextensions are set to true this works good for linux as well.
This limitation is still present in 4.11.2.
In fact I found the following link http://lists.kde.org/?l=kfm-devel&m=112342156412359
This is from 2005 where a patch is announced to add ACL's to kioslaves.
Also is noted that adding ACL's to the smb kioslave (and nfs) is a longer term plan.
As now it is 7 years later to me that sounds like it should be just about ready :-)
*** This bug has been marked as a duplicate of bug 40892 ***