418928@cepsz.unizar.es escribió:
> Hi everybody,
>
> I would like to know if it is possible to configure Firefox somehow in
> order to force that only one JVM is used even if different applets are
> loaded on different Firefox instances. Or, otherwise, to avoid
> multiple instances of Firefox running: that is, to force that new
> links always open on the currently executing Firefox (if there is one)
> instead of executing a new browser and that if the user double clicks
> the Firefox icon and there is already a Firefox running no other
> Firefox is launched.
>
> Thanks in advance,
>
> Sergio
>
Use TabMix plus

418928@cepsz.unizar.es wrote:

> I would like to know if it is possible to configure Firefox somehow in
> order to force that only one JVM is used even if different applets are
> loaded on different Firefox instances.

What do you mean, "different Firefox instances". Do you mean there are
two different logged-in users running Firefox on the machine? That's the
only situation in which you'll usually get two instances.

Otherwise, they're all windows thrown up by the same process, and the
JVM is shared between all the instances. The individual applets, of
course, will get loaded multiple times (once on each page), even if it's
the same applet.