[aww]

Argh, you are correct. text/css is not compressing either and I could have sworn I checked for and fixed this in our 3.1.1 configuration. So it either reverted or never worked. That's millions of pageviews now without compression

And that one *is* under "Mime Type Definition" by default.

So it's definitely a bug unless they can explain otherwise?

I assume you are using the commercial version given the number of servers, etc. so this is not just a standard version bug anymore...

added: even when the file is renamed to style.txt and served as text/plain it's not compressed

added: even the css on this site is not being compressed:
http://www.litespeedtech.com/static/css/template.css
refuses to be served with compression
(and I am assuming litespeed has text/* in their compresion settings and text/css in their default mime types)

http://www.litespeedtech.com/static/css/template.css

GET /static/css/template.css HTTP/1.1
Host: www.litespeedtech.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
----------------------------------------------------------
HTTP/1.x 200 OK
[missing "Content-Encoding: gzip" here]
[missing "Vary: Accept-Encoding" here]
Date: Fri, 27 Jul 2007 12:17:02 GMT
Server: LiteSpeed
Accept-Ranges: bytes
Connection: Keep-Alive
Keep-Alive: timeout=5, max=100
Etag: "20c1-469bead3-3c8252"
Last-Modified: Mon, 16 Jul 2007 22:01:55 GMT
Content-Type: text/css
Content-Length: 8385
Cache-Control: max-age=604800
Expires: Fri, 03 Aug 2007 12:17:02 GMT