I don't know if I'm doing something wrong or if this is a bug.

I've created my OpenVPN connection, and it is connecting fine. I can browse web servers on the remote LAN just fine.

I installed nautilus and I can browse samba shares on the remote LAN just fine.

I cannot get it to work in Dolphin

I go to Network > Samba Shares

I can see the remote workgroup, but clicking on it seems to do absolutely nothing in Dolphin.

Any help will be greatly appreciated

If you open Konqueror, and type "smb://ip_of_remote_server" does it work?

No, doing smb://ip_of_remote_server in konqueror gives

timeout on server ip_of_remote_server (comes up quite quickly)

I checked Nautilus again to be sure the connection is good, and that is still working fine

Did you replace ip_of_remote_server with the IP address of a Samba/Windows server in the remote network?

hehe yes

I just tried navigating to the shares in Konqueror. This has the same results as Dolphin: I can get as far as seeing the workgroup, but clicking on the workgroup seems to do absolutely nothing.

One key key difference I'm seeing between nautilus and dolphin/konqueror is that the workgroup is capitalised in nautilus like follows:

Nautilus: WORKGROUP
Dolphin/Konqueror: Workgroup

(Not the actual name of my workgroup)

Is that relevant?

Shouldn't be. This seems to point towards a bug in the SMB KIO slave...
If you run "killall kio_smb" then try to open the connection does it make a difference?

Putting smb://ip_of_remote_host/ into dolphin gives

Could not connect to host for smb://smb/

I did "killall kio_smb" and tried opening the connection again, but still only nautilus is working.

Do you think I should log a bug?

Yes, please file a bug at bugs.kde.org.

Bug 247230 has been added to the database