Possible Duplicate:
Turn off Mozilla Firefox warning that there are new Firefox add-ons

Firefox sometimes pops-up stating that there are updates for it, or an Add-on has been updated, etc.

How can make Firefox silent, so that it will only update itself/add-ons in the background, and doesn't pops-up with a message??*1

in the "about:config"

app.update.silent;false

setting this to true? what does it do?

*1 = because non-IT people will use PCs, and they don't know what to do, when a message pops up..

p.s.: Firefox 3.6/Scientific Linux