It seems that whenever I sign in it does, but the whole thing freezes and i have to terminate it EACH TIME! I tried older versions like 7.5, but same problem. It was working earlier today, not sure why it won't work now. Any suggestions?
Try uninstalling MSN, search for and delete all left over msn files, then run a registry cleaner, like CCleaner or BeClean. Now reboot and reinstall MSN. See if that does it for you.