title: CSS keeps disappearing with enabled BE compression Typo3 4.5.5+ and with any Windows browser?
body: <p>In my TYPO3 4.5.5, 4.6.8, 4.7.0 installation I've enabled the BE compression and I've added the filetype css.gzip and js.gzip to the gzip encoding however it seems to work only when I use Linux to load the backend. When I load the backend from a Windows box the backend css keeps disappearing like in this question: <a href="https://stackoverflow.com/questions/7068286/typo3-backend-css-keeps-disappearing">Typo3 backend css keeps disappearing?</a>. I've lighttpd and xdebug installed. How can I trace this problem? What can I do better? When I load the BE either the css is gone and I see a white background and all the links or the css is gone and I see nothing but a grey background? This happens to me with Opera, Firefox, Chrome and IE but only in Windows. It works good in my vmware Linux with Opera.</p>
  
  <p>Here is the head of the html document I receive in Windows:</p>
  
  <pre><code>     &lt;link rel="stylesheet" type="text/css" href="../typo3temp/compressor/ext-all-notheme-448c172dae3b05a28e37e929acd3dfbd.css.gzip?1338165817" media="all"&gt;
       &lt;link rel="stylesheet" type="text/css" href="../typo3temp/compressor/xtheme-t3skin-b1eb282b32815f23ab802d5f31be8d32.css.gzip?1338165817" media="all"&gt;
       &lt;link rel="stylesheet" type="text/css" href="../typo3temp/compressor/merged-13c77c78c44baff349c74df3ad74c358-2f57f69c13098471b93b4fa184d2bf2c.css.gzip?1338198129" media="all"&gt;
       &lt;link rel="stylesheet" type="text/css" href="../typo3temp/compressor/opendocs-452c8b724f6c5a4422f90810531ca5a5.css.gzip?1338166068" media="all"&gt;  
  
       &lt;script src="../typo3temp/compressor/prototype-8eb6a2a9407e9463f08359cc9bad4c87.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/effects-7755a9120837eb7b8dff7c8dd2348199.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/builder-4fb5884be8295df97135419557d212dd.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/effects-7755a9120837eb7b8dff7c8dd2348199.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/dragdrop-57bf1a5e32454608dbccbef2d2662a48.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/controls-722f428342d0f41d9510f8acd197ea7f.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/scriptaculous-8f7107540a1c9b395c16bfcafedf2cd2.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/ext-base-c203c25c05d8ccea2297e64c157fc2be.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/ext-all-97d26ae0274f2fc5953506492a4c41d4.js.gzip" type="text/javascript"&gt;&lt;/script&gt;
       &lt;script src="../typo3temp/compressor/ext-lang-de-6eab6fa8f67816fcbfac59dc46c48f64.js.gzip" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt; 
  </code></pre>
  
  <p>Here is my lighttpd rules:</p>
  
  <pre><code> $HTTP["url"] =~ "\.js\.gzip$" {
      setenv.add-response-header = ("Content-Encoding" =&gt; "x-gzip")
      mimetype.assign = ( "js.gzip" =&gt; ".gzip" )
   }
  
   $HTTP["url"] =~ "\.css\.gzip$" {
        setenv.add-response-header = ("Content-Encoding" =&gt; "x-gzip")
        mimetype.assign = ( "css.gzip" =&gt; ".gzip" )
   }
  
   compress.allowed-encodings = ( "gzip", "deflate")
   compress.cache-dir = "/tmp/lighttpdcompress/"
   compress.filetype  = ( "text/html", "text/plain", "text/css", "text/xml", 
   "application/x-javascript" )
  </code></pre>
  
  <p>This is my response header from backend.php:</p>
  
  <pre><code> Cache-Control  max-age=1728000, no-cache, must-revalidate
   Connection         close
   Content-Encoding   gzip
   Content-Type   text/html;charset=utf-8
   Date   Wed, 30 May 2012 12:17:50 GMT
   Expires    Tue, 19 Jun 2012 12:17:49 GMT, 0
   Last-Modified  Wed, 30 May 2012 12:17:49 GMT
   Pragma no-cache
   Server lighttpd/1.4.29
   Transfer-Encoding  chunked
   Vary   Accept-Encoding
   X-Powered-By   PHP/5.3.8
  </code></pre>
  
  <p>Here is my request header:</p>
  
  <pre><code> Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
   Accept-Encoding    gzip, deflate
   Accept-Language    en-us,en;q=0.5
   Connection keep-alive
   Host   XXXX
   Referer    XXXX
   User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0
  </code></pre>
  
  <p>This is my post from the login screen:</p>
  
  <pre><code> challenge  XXXXXX
   commandLI  Login
   interface  backend
   loginRefresh   
   login_status   login
   p_field    
   redirect_url   backend.php
   userident  XXXXX
   username   XXXXX
  </code></pre>
  
  <p>After loading I can see only an empty grey screen but with firebug I can see that all the source code and the css files is loaded into my browser? My backend really works only in Linux and Opera (maybe Firefox)???</p>
  
  <p>Edit: I've checked a virtual machine with Firefox 12 and Windows 7 Ultimate and it's working???</p>