I used to be in love with ntop, but it has shown to be very unstable in the last few years (memory leaks, crashing, etc. for version in fedora-epel as
And here I thought it was just my PC. I finally converted my home PC to Linux last week (cough, cough Ubuntu cough) and one of the first things I did was install ntop. As soon as I started it, my PC hung solid.