I updated the ARD client on my Lion Server (10.7.4) to 3.6 via Software Update and it instantly killed my connection I had to it via ARD and now refuses to reconnect with the dreaded "Access denied" message. I can't get it to work. I tried kickstarting the agent via SSH, I rebooted and I still can't get back in using ARD. I'm using ARD 3.6 on my MBP so client and server do match. Any ideas? Oh, and yes, I can still VNC to it. Just ARD doesn't want to play along anymore.