To clear the DNS cache on a Mac computer running the later version OSx Open a Terminal window and paste in the following: sudo dscacheutil -flushcache;sudo killall -HUP mDNSResponder; say cache flushed Then hit enter. You will be asked for the password you use to login as an admin.
Hot to Fix Multiple Monitors not working in OS X 10.9.3 Mac Pro 2013 computer users have experienced problems in some configurations since upgrading to Mavericks OS X 10.9.3. For most people, the issue related to the use of mini port to DVI external monitors. The mac pro by design can only run two Miniport to DVI monitors, and any additional monitors need to be run on a converter that has additional power. Apple call this their Dual Link DVI adapter. Essentially this is the same thing, just with a powered USB port on it. If you were to try an run 3 mini port to DVI adapters, what you would find is that only two monitors plugged in would run. Effectively the last two plugged in in any combination would be the two that ran. Apparently this is by design, and part of the way that the Mac Pro… Read More »Mac Pro 2013 Multiple Displays Stop Working with OS X 10.9.3 – Fixed