When I log off from my computer, not an actual restart, and logon again de ESS window pops up automatically, not the splash window. Changing between the different parts of the interface does not work correctly. The window is not updated. Closing the window works, but bringing it up again fails to work. As far as I can tell ESS continues to work. The only way to 'repair' this, AFAIK, is to restart the computer.