I am not very happy with the horde mail client as I would prefer a more thick client looking mail front-end. For instance it does not display embedded html emails very well. Looking around I have found the web mail client called roundcube.
I have installed this on the Bubba 2 and it makes the horde client look prehistoric. It only took 40 minutes to install - I do have mysql workbench on my xp box pointing to the bubba mysql which helps and I use the bitvise Tunnelier as the ssh/sftp client which also helps in installing as this has to be manual but the instructions are great.
I would recommend this client - take a look http://www.roundcube.net
