Middle button emulation hasn't been working since I got rid of xorg.conf. I really didn't want to go back to messing with that file, particularly since the event number can be different each time I reboot depending on what USB devices are plugged in; so I googled around and found this, and put it into my ~/.fluxbox/startup:
xinput set-int-prop \ "SynPS/2 Synaptics TouchPad" \ "Evdev Middle Button Emulation" 8 1
last updated 2011-09-09 09:14:38. served from tektonic.jcomeau.com