dolphin network samba shares dns search domain

Binary package hint: dolphin

I installed Kubuntu-8.04-beta as a vmware-guest (NAT-Networking -> no specific search-domain by dhcp in resolv.conf)

when browsing Network->Samba-shares with Dolphin i see my windows domain and also get our hosts listed when i open the domain.

When i click one host (e.g. our windows-fileserver) dolphin tries to open "smb://hostname" but doesn't show any shares. Error message in bottom line: "No connection to host for smb://hostname/" (manually translated from german)
When i change the path manually to "smb://hostname.domain.tld" it also lists the available shares and i can browse any shares after providing my login information as "domain\username" and the password.

when i change my resolv.conf to "search domain.tld" the shares are listed correctly without the need for maual correction.

by the way: Is there still a way, to set a standard domain\username for browsing samba-shares? I didn't find anything in "System Settings".

user@host:~$ lsb_release -rd
Description: Ubuntu hardy (development branch)
Release: 8.04

user@host:~$ apt-cache policy dolphin
dolphin:
  Installiert:0.9.2-0ubuntu5
  Mögliche Pakete:0.9.2-0ubuntu5
  Versions-Tabelle:
 *** 0.9.2-0ubuntu5 0
        500 http://internal-aptcache.domain.tld hardy/main Packages
        100 /var/lib/dpkg/status