Description:
Opera generates invalid HTTP POST requests.

Additional info:
* package version(s)
** Opera 9.61-1


Steps to reproduce:
Configure wireshark to capture packets for you.
browse to your favorite site in opera try to log in using a form that accepts POST input.
examine the packets in wireshark.
the packet will say:
[TCP segment of a reassembled PDU]
if you try the same thing using firefox or any other browser it will say:
POST <insert name of page and other HTTP headers here>
It's not a problem for some sites, but others fail to parse the malformed headers
specifically, lighttpd running on debian etch stable returns the following response code:
HTTP/1.1 417 Expectation Failed
opera then resends the request unmodified again, and again. this results in literally hundreds of request messages in the log file on the server, and a permanent loading bar, rendering the site unusable.

Marked this as high because this bug renders some sites unusable, but not critical because there are a plethora of other browsers to use as a workaround.