I'm using my SF hosted web page to host a MediaWiki site. I've just noticed on visiting the site for the first time in a while that my login to MediaWiki doesn't "stick." I log in, get the 'Login Successful' page, but then as soon as I navigate to another page the login is lost. This means I can't edit any pages, or do anything else that requires you to log in. I read somewhere that this might be something to do with where PHP saves the session data, but I'm not certain that this is the problem, nor do I know if I have any control over PHP on SF servers anyway. It's not a problem I've had with the site up until now. Does anyone know what I can do to solve this issue? At the moment, I can't do anything useful with it!