How To Run Multiple Firefox Instance From Different Accounts in Linux

In Linux, unlike Windows, multiple users can simultaneously connect to the same machine and get a full GUI using windows managers like VNC. However when one of the account has Firefox opened, others are prevented from bringing up firefox which can be very much irritating. The solution is to bring up firefox with the following command:
firefox -profile-manager -no-remote

This will tell firefox not to connect to an already open instance (default action) but create a new instance.
It also asks it to display the profile manager to allow you to choose a profile. I also had success by simply using:
firefox -no-remote in Firefox 2.x

You should create a different profile for each login to allow you to simultaneously open Firefox from multiple logins on the same machine. I use the same name as the login id, but that is not a necessity.

BTW: Have you tried Opera. Opera on Linux is faster than any other browser. It handles multiple tab even better than Firefox. Overall so far I am having a nice experience with Opera. Unfortunately I don’t get all the plugins of Firefox.