Well, to say the least Lion has ruined my screen sharing. We have about 5 computers in the house that connect to each other for screen sharing and this was all working swimmingly until 10.7. I am still able to connect from Lion computers to systems with 10.6 however I cannot connect from anything to a 10.7 computer that doesn't have a password set. I have just tried it with the computer i'm on now (a 2006 MBP running 10.7) and this comes up: I have no idea what it means but unlike the usual Screen Sharing dialogue box --> (Box) it doesn't let me bypass it if I don't have a password set. Any advice people, bar the obvious. If I wanted a password i'd have set it (it's the Kitchen computer and people get confused if you have a password). Thanks in advance!