In my side.. 2 different computers (vista, w7 and ie8 ) with yslow:
In litespeed:
SIZE (KB): 37.8K GZIP (KB): 40.7K
Date Tue, 21 Jul 2009 15:45:12 GMT
Server LiteSpeed
Accept-Ranges bytes
Etag "9ee0-4a65d5eb-0"
Last-Modified Tue, 21 Jul 2009 14:51:23 GMT
Content-Type image/png...