Apparently the Jabiru guy(s) rewrote the app and released a 2.0 version and it works now where it did not when i was reviewing xmpp apps last time.
I'm writing this guide for version 2.1.
Once installed go into the account setting and configure as follows:
Jabber ID: firstname.lastname@example.org
Password: self explanatory
Resource: i believe this is optional but i used the first part of my @ name so mine is RussellThomas@Russell-KV4S so i used RussellThomas in this field.
security mode should be enabled by default but if not enable it.
that should do it as far as connecting.
set as you prefer, see MUC notifications on 2.1!
once back at the main screen hit Menu>Connect
Now for Channels:
Room: channel name
Nick: last part of @ Name in my case Russell-KV4S (for RussellThomas@Russell-KV4S)
Password: leave blank (unless you know your channel uses one)