As version 0.07 of CompressClientFixup, documentation states that "This version of the handler does not restrict compression for MSIE over HTTP".
So, this version still send compressed content to buggy browsers.
Anyway, It had no sense to fix the module to restrict compression to MSIE 5.5 and 6 (maybe 85% of users? or 95%?), in that case simply don't use compression.
I warn about this because playing with gzipped pages gave me a big big headache.
Regards,
José.