Updated to 3.5 beta 3 and using Dir Opus 9 trying to drag a file icon to copy, display fusion causes DOpus to crash and then the entire desktop locks up, no windows can be activated with mouse and mouse stays busy pointer, the only thing that works is the start menu and I have to log off to kill all processes and then logon to windows again. Also had desktop locking when running visual studio. Going back to beta 2.