[horde] Styles not applied in Firefox

[Sergey A. Lipnevich]

Hi Horde developers,

Before writing this I tried to find out if anybody is having the same 
problem by searching through the lists, but didn't see anything relevant.

I have set up Horde 3.0.5, IMP 4.0.4-rc2, and some other Horde 
applications, to work with lighttpd 1.4.5 and PHP 4.4.0 (via FastCGI) on 
Linux. PHP's ini file is configured to use compression. The pages for 
Horde or any other app are rendered as if they have no stylesheets, but 
only in Firefox. IE and Safari render them fine (with tabs, pictures, 
backgrounds, etc.), but any version Firefox I have access to (1.0.7 on 
Linux, 1.0.7, 1.5b1, 1.5b2, on Windows) shows ugly background-less pages 
that have usual top-of-the-page horizontal list of items going 
vertically from top to bottom, and the same thing happens with tabs 
also. The stylesheets appear to be served correctly, at least I can see 
status code 200 for their GET requests in the HTTP access log.

I suspect that it may have something to do with compression, but simply 
disabling it in php.ini doesn't seem to fix the problem.

I'd be grateful for any advice. Thanks!

Sergey.