Prevent Accidentally Activating Hot Corners in MacOS

I find Hot Corners an essential MacOS feature, especially when using apps in full-screen mode or screen sharing.  One downside of the feature is that it’s easy to accidentally activate. A way to prevent this, which isn’t at all obvious, is to require a modifier key as well as moving your mouse into the corner.

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Connection Timeout When Trying to SSH From a Mac to Linux

Recently I had to SSH from Mac OS X on my MacBook Pro running Yosemite (I also confirmed the same behaviour on Mavericks) to a host running Oracle Enterprise Linux 5.7. The ssh command would simply freeze, then time out with the following error a short while later.

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