Just got a message from Lesley Lam, iMechanica user number 1, as follows.  Harvard School of Engineering and Applied Sciences IT is in the process of moving our servers to a faster, newer host.  As part of this process, I would like to take down iMechanica for about 10 minutes on Friday October 3rd at 10am.  I am hoping this will improve performance and reliability on the machine as well.