We switched to Zimbra a few months ago. It's ok but I have switched back to Thunderbird as a client for it. Some finetuning issues that Zimbra hasn't addressed from my perspective.
calendar syncing with Google calendar et al
ability to integrate instant messaging with external jabber servers
calendar event booking that works in something besides the Zimbra web interface
filing that works as well as Thunderbird with Nostalgy plug-in
lastly, not a Zimbra complaint as nobody does this well - tagging - when is someone going to do this right... I would rather tag than file but no one seems to be able to make mail work like del.icio.us.... sigh.
Suddenly not travelling through walls is a "feature". I can see the advertising now.... "fibre optic speeds.... except on rainy days"
http://wiki.villagetelco.org/index.php/How_to_use_the_software_build_environment
OpenWRT on a D-Link DIR-300 (Atheros AR2317):
http://wiki.villagetelco.org/index.php/Interesting_Atheros_SoC_based_low-cost_device_with_4_port_switch
Open Hardware can make a difference in the developing world. http://manypossibilities.net/2008/08/open-hardware-for-development/ Stand by for the Mesh Potato http://www.rowetel.com/blog/?p=70