I'm not sure if anyone else has experienced this issue, but for the last several days I have notice that apps will randomly close when I am not using them. There is no error, alert, warning, etc; the app simply closes silently. I have had to re-open Microsoft Excel 6 times today and I am afraid that if this keeps happening I may eventually lose some unsaved work. I have over 10gb of free memory and low resource usage. Has anyone else experienced this issue or have any ideas on what could be causing this?