Warning: "Going to buffer response body of large or unknown size..." when using http-bind

Hi,

Im using http-bind with a custom javascript client. Two users where connected and chatting for 12 hours until one of them got disconnected(Im not sure about the other). In the log O got the following warnings:

2007.09.20 20:30:14 Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.

2007.09.20 20:30:16 Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.

2007.09.20 21:31:22 Client provided invalid session: ffc2d093 xx.xxx.xxx.xxx

What causes that and how can I solve it?