> P.S. Why konqueror? It is the only browser that still can run multiple copies of itself.
> Unlike firefox and google-chrome who refuse to start with an error
> "this application is already running on computer X" when I sit in front
> of computer Y and need to google something. (Computer X is in a different
> building and I am google something there *too*) (NIS+NFS cluster).

It may sound awkward, but you could as well start your new Firefox in a selinux sandbox with which you'd get an entirely new environment - if that is what you intend to achieve and I don't misunderstand it.

sandbox -t sandbox_web_t -X firefox

(It doesn't work with chrome because of some of their PID magic.)