Bug#601033: apache2.2-common: AddOutputFilterByType is deprecated but used in deflate.conf

[Stefan Fritsch <sf@sfritsch.de>]

On Friday 22 October 2010, Andrew Pimlott wrote:
> It gets weirder: if I change text/plain to text/html, the encoding
> is not added.  It seems that AddOutputFilterByType catches proxied
> requests if text/plain appears in its list of mime types, as if
> all proxied requests were considered text/plain.

Do you have DefaultType text/plain set somewhere? If yes, try to not 
set that for the reverse proxied requests.

I could imaging (but have not checked) that the processing order is 
like this:
- DefaultType sets the content type
- AddOutputFilterByType looks at the content type
- mod_proxy sets the content type to what was received from the 
backend server