I was contacted by somebody @untangle and i told them about my issues with untangle to wit:
lack of a caching proxy server
Lack of the ability to support more than two nics..aka a third nic for wireless clients..but not on a dmz(much like smoothwall and ipcop's blue interface)
Are there plans to address these in future version? If they have already been addressed I have not found it on the site yet(which is my bad).