My understanding is that this issue has been present in the last two stable releases of Ruby. I'd rather run Ruby and Rails on my Mac, but Apple's stupidity of forced upgrades of everything is an issue here. Older computers have hardware issues as you might imagine and you'd think that dropping everything to try an install in Windows would have solved the issue. Unfortunately it just shows that stable releases don't necessarily work. This all is very disappointing.
Well, I guess it's a month down the drain because I'm not falling for the Apple tactic that you have to replace a device because they say so.
Does anyone have a solution? I'm not going back to Ruby 2.0.
And note to webmaster: The links on this site would be a lot easier to use on mobile devices with some padding added to them and the ability to click on the link from the padded area.