YSlow tells me site is not compressed even though it is - apache

Question

"Grade F on Compress components with gzip
There are 19 plain text components that should be sent compressed"
I have checked the compression of the main page, as well as all 19 components individually using "http://www.whatsmyip.org/http_compression/" and it shows compression in all of them. Furthermore, I ensured I'm not using a proxy and that "Accepting-Encoding" is gzip/deflate using "http://www.lagado.com/proxy-test". Contrary to these results, the mod_deflate log files is as follows (excerpt):
... "GET / HTTP/1.1" 4498/13306 (33%)
"GET /Home_Page/style.css HTTP/1.1"
-/- (-%) "GET /css/style.css HTTP/1.1" -/- (-%) "GET /css/slimbox.css HTTP/1.1" -/- (-%) "GET
/js/validator_o.js HTTP/1.1" -/- (-%)
...
So it's not compressing the css or js files? My config file is as follows:
<IfModule mod_deflate.c> SetOutputFilter DEFLATE
AddOutputFilterByType DEFLATE text/html text/plain text/css text/javascript text/xml image/svg+xml application/javascript application/x-javascript application/atom_xml application/rss+xml application/xml application/xhtml+xml application/x-httpd-php application/x-httpd-fastphp
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.avi$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.mov$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.mp3$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.mp4$ no-gzip dont-vary SetEnvIfNoCase Request_URI \.rm$ no-gzip dont-vary
BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
DeflateFilterNote Input instream
DeflateFilterNote Output outstream
DeflateFilterNote Ratio ratio
LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate
CustomLog /etc/httpd/logs/deflate_log deflate </IfModule>
Firefox 3.6.8
Windows 7 Professional
ISP: Rogers

Answer 1

Nevermind, it worked now. I set the modified the config file as follows
# Method 2: Compress all content, manually excluding specified file types
<IfModule mod_deflate.c>
# place filter 'DEFLATE' on all outgoing content
SetOutputFilter DEFLATE
# exclude uncompressible content via file type
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png|rar|zip)$ no-gzip
<IfModule mod_headers.c>
# properly handle requests coming from behind proxies
Header append Vary User-Agent
</IfModule>
</IfModule>
Then did a browser cache reload and checked the log files and it was compressed. Yslow agreed.