About version 3.6.2 of the Apple Remote Desktop Client
Update 3.6.2 is recommended for everyone using Apple Remote Desktop and improves screen sharing reliability by correcting an issue where users only saw a white video on the Messages screen sharing using the OS X Lion system.
The update is 3.6MB and requires OS X 10.7 or higher. In addition to this update, the version for administrators also received improvements in performance and reliability. It is 14.7MB and also minimally requires OS X Lion. (Client and Admin)