The only problem I have is with the bb2 screener cookie. Not because of the cookie. No way, we need this one.
As it is a third party session cookie from the bad-behaviour antispam security system. Insecurities and attacks can be blocked using bad-behaviour…
A problem because it is exploitable and for instance can be send twice (exploits to abuse for it were seen well into this year as are ongoing XSS exploits)
See for instance: http://exploitsdownload.com/search/bb2_screener_/
See: http://stackoverflow.com/questions/6418617/forensic-analysis-of-an-actual-hacked-web-site (link author vtortola)
Insecurities can be blocked using bad-behaviour…

polonus