Case sensitivity of @import media values

CSS 2.1 Section 7.3 says, "Media type names are case-insensitive."
However, my results at
http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.savage
creek.net%2FCSS%2FTest%2F200701%2Ftests%2Ft0703-media-01-b.htm&warning=1
&profile=css21&usermedium=all provide the error "unrecognized media
HANDHELD" etc.
 
A defect?
 
Best wishes,
 
Melinda
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HP  -   Melinda Grant
Connectivity Standards 
Consumer Printing and Imaging
+1 (541) 582-3681
melinda.grant@hp.com   
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