I have a problem with the admin panel, I log in.. make a few changes and out of the blue I get a message popping up telling me to log in again. Any ideas why this keeps happening? It's rather annoying! I literally get 30-60 seconds before this comes up.

I think this might be a problem with how your instalation or browser supports session cookies.
You can also have a problem with the cooking being set for the www. version of your website while you navigate on the non www version.

You can try to clear all cookies then log in and see if it still happens.

I had this for a very frustrating afternoon - it was read/write access to the sessions tmp folder on my local machine - hope this isn't on your production server... I did so many things (including updating my copy of wamp) that I forget exactly which piece solved it - but I think it was deleting all the sessions and changing the permissions on the folder...

then try investigating the php tmp folder (it'll be in your php.ini - or in phpinfo search for "session.save_path" and check it has permissions and stuff), infact look over all the session info and maybe post it here - it'll be something todo with sessions/cookies not saving i believe...