I've been using untangle for quite awhile now. The OSS selection is great, overall no complaints whatsoever! It works flawlessly.
Sometimes, out of curiosity, I like to monitor what it is doing, and especially when I hear loud fan noises, or see the disk activity light flicker actively, I wonder what it is up to.
At those moments, I wish that there is a module in the Java administration console that allows me to take a look at the hard drive usage, disk temperature, cpu usage, bandwidth usage, top processes, things like that, without having to manually login.
Just a thought,
-- Alex