Uhm I have noticed that b00bs takes a lot of time to release an update patch.

I've got this another Non-steam version of CSS.

(The Game)

http://www.planetcss.com/2010/07/download-css/

(Updates)

http://www.planetcss.com/category/updates/

(The latest update-Sep 15)

http://www.planetcss.com/2011/09/css-up ... tive-0-43/

From what I noticed they release an update patch faster than b00bs.

So just give this a try