HOW TO KILL A JEDI
Recitation: First, weapon selection is critical. If I see one more idiot attacking a Jedi with a blaster pistol, then I'll kill them myself. Select grenades, sonic screamers, cluster rockets, and plasma charges. Mines are also effective, since many Jedi will run to meet you in hand-to-hand combat. Silly Jedi.
Addendum: Gas attacks are effective if you can take them by surprise - Inhalation is less effective than ones that work on skin contact, as some Jedi seem to be able to hold their breath for remarkably long periods of time. Extrapolation: Still, don't rely on it, since Jedi can fight off the effects, it just distracts them, leaving them open to an alternative avenue of attack.
Cautionary: Do not forget to activate any energy shields you may possess. Lightsabers, while powerful, have considerable trouble penetrating most military-issue energy shields - provided they are energy shields, and not those crude Mandalorian melee shields.
Statement: Countering their other powers is far more difficult. Confession: I do not entirely understand their other abilities, but I do know that many of them require that the Jedi know you are there, and can see you. Thus, sniping, and using cover are always advantageous.
Statement: A technique that Revan used freqeuently was to attack a Jedi indirectly. This method only works if the Jedi is adhering to the self-destructive path of pacifism and sacrifice. Killing their allies, or placing them in jeopardy, will cause a Jedi to leave themselves exposed in order to protect one another. That is why there are many less Jedi than there were a decade ago.
Cautionary: Statistically, overplanning the assassination of Jedi seems to backfire. It seems that impulsive acts are more common to succeed than planned ones. Jedi, like sand-kivers, seem to sense trouble a few seconds before it happens. They are tricky little pests.