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Date: Wed, 25 Nov 2009 01:32:28 GMT
Server: Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.7 with Suhosin-Patch
X-Powered-By: PHP/5.2.4-2ubuntu5.7
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 6572
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: text/html; charset=utf-8
 
200 OK

And it was really it! Though they both have text/html, they had different character set values. Server responses with ISO-8859-1, but the <meta> instructs the browser to use utf-8, as it is declared in the document.

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

And so the second load of page occurs, its sort of trying to correct page encoding on the client-side. In the script I was working, I needed to pass some session values to the next page and clear it on page load, but when it reloads the second time, the session value had been emptied.

Hope it helps.