Adritha - You need to PM me about this issue. In general, if the site is logging you out so that you can't read what you're attempting to, the best thing to do is restart your computer. It generally solves the problem for me.
Sam - The permissions on the forums were changed yesterday to better control the content we allow to be posted. As a registered user you should be able to post, but you are not able to post new threads and in most sections of the boards, your posts will be moderated (meaning a moderator has to read and approve them after you post them). After you are sorted into a house, these control measures loosen. The permissions are a work in progress and you should be able to post moderated threads in the hospital wing as of this morning.