Kubuntu, Apache 2.2, Mongrel, Mongrel Cluster

I think there is a typo, it has been corrected on several guides:

BrowserMatch bMSIE !no-gzip !gzip-only

should read:

BrowserMatch \bMSIE !no-gzip !gzip-only

Also, I'm hoping your line got truncated as I did on the mongrel
apache2 guide here:

AddOutputFilterByType DEFLATE text/html text/plain text/xml
application/xml application/xhtml+xml text/javascript text/css

That should all be one line.