Dear All, I have several CentOS 7 machines (but not all of them) on which I have noticed that something gets written to /root/.cache/mesa every so often (once every several days). It is my understanding that mesa is related to GUI (X11), but on these machines (on neither of my machines, actually) root never logs in to GUI X11. I may have remote root logins with Xforwarding though. Hence my puzzle: what is that that writes to /root/.cache/mesa? Some, but not all of occasions seem to happen upon machine [re]boots. Thanks. Valeri PS This gives me dejavu. A while ago when people started demanding to have google chrome browser installed on their workstations I had hard time to get rid of google's cron jobs that were writing where only root should - without explicit permission to do so. Dough. Somebody's software thinks it is smarter than everyone who uses it... "Machine learning" all the way ;-) -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++