I am unable to maintain a logged in session on www.jboss.org when using my Safari web browser from my Apple OS X box. At least I am asked to login again if I want to post in the forums. I guess it's a Nukes question/bug.
this is an issue from jetty. thhe current version of nukes does not have this problem anymore since we switched to tomcat. however the website has not been yet updated. we hope to do this soon, meanwhile you can use Mozilla Firebird which is a decent browser and lightweight. (what I am doing since I have a mac too while waiting the possibility to use safari again)