Lucid / Apache2 / mod_deflate

I've configured mod_deflate and I think it is working based on Yslow telling my that my pages are compressed. However when I look at the apache log file, this is what I see:

"OPTIONS * HTTP/1.0" -/- (-%)

"OPTIONS * HTTP/1.0" -/- (-%)

"OPTIONS * HTTP/1.0" -/- (-%)

"OPTIONS * HTTP/1.0" -/- (-%)

"OPTIONS * HTTP/1.0" -/- (-%)

I configured the log using this:

DeflateFilterNote Input instream

DeflateFilterNote Output outstream

DeflateFilterNote Ratio ratio

LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate

CustomLog /var/log/apache2/deflate_log deflate

Any ideas on why the logging isn't working?

Thanks, Len