Security fallout of hiding tabs-on-bottom mode

I'm concerned by the reaction (see the ongoing shouting in 
m.d.a.firefox) to the removal of the exposed toggle for tabs on the 
bottom (of the toolbar area).  Specifically, I see a surprising number 
of people who say that this is *such* a deal-breaker for them that they 
will not upgrade Firefox past the version that removes the toggle.  Yes, 
even though it's still available through about:config.  (The rationale 
seems to be that they no longer trust that the about:config option will 
remain available.)

Obviously, refusing to upgrade Firefox opens up these users to serious 
security risks.  I would like to suggest that we put that toggle back 
in, and commit to preserving tabs-on-bottom mode for the foreseeable 
future, *just because* it will encourage this upset minority of users to 
continue upgrading.  Remember that the actual size of the upset minority 
here is probably at least 100x larger than the number of people who have 
gone to the trouble of complaining about it in the newsgroups and/or the 
bug report.

zw