Vladan,
as far as i know they released 4.6 or 4.7 then went straight
to 6 so as to get one over on MS who were releasing ie5. i 
think that netscape thought that people would go for their 
browser if it was a higher number than ie. i have never even
heard of mention of nn5 on an offical level anyway.
cheers
~M

~
~As far as I know Netscape 5 doesn't exist, right?
~I've found some compiled source codes for something
~that should be Netscape 5, but there is no official
~release, right?
~
~Then why are statistics at
~http://www.thecounter.com/stats/2003/February/browser.php
~showing that 1% of visitors are using Netscape 5.x ???
~
~Vladan Nikolic
~