Found Compatible Version for 3.0+ Rated 4 out of 5 stars

I've finally found a version that works with Firefox 3.0+. It only needs the usual update to the rdf file. Apparently from what I've read Menu Editor breaks the functionality. Read more here:

http://dlstatusbar.proboards43.com/index.cgi?board=menuedit&action=display&thread=1048

Here is the updated version:

http://stashbox.org/14548/Hide_Tab_Bar_1.0dev.3a.xpi