css parser detecting false errors

while trying to figure out why the new mozila.org home page
displays so poorly in Amaya, i noticed that amaya indicated many
errors in css positioning rules that were double valued....
i ran the css page thru the online w3 css validator and the file was ok!!
there seems to be a problem when one param is % and other is px ...

is this only false errors and the parser still handling ok or is this a 
bug ... if so can it be repaired for next release ... i have included the
css file but it can be pulled from mozilla.org at any time 
--
john russell ve3ll@rac.ca [those are L's as in LLAMA]
http://home.cogeco.ca/~ve3ll
http://home.cogeco.ca/~trains
http://home.cogeco.ca/~cipher