t100801-c548-ln-ht-02-b-ag.htm - is this test valid?

Hi

Despite the fact that I have AHEM font installed test 
http://www.w3.org/Style/CSS/Test/CSS2.1/current/t100801-c548-ln-ht-02-b-ag.htm 
is not passed. There is still red color visible.
Is this line correct in this testcase(CSS Validator results contain error regarding to this line)?:
..eleven {line-height: -1em; line-height: 2em; line-height: -1em;}
According to w3 css, negative values are illegal as it is written here:
http://www.w3.org/TR/REC-CSS2/visudet.html#propdef-line-height