Problems with your Mac? Just re-install the Apple Security Update

My MacBook Air started freaking out late last week. A bunch of services weren’t working as expected after I installed the most recent security update. I spent hours trolling Apple support for any hints of a fix. Not finding anything, I figured my only salvation would be to do a re-install or something drastic.

But thanks to the help of Garrett and his regular readership of Daring Fireball, he pointed out the easiest of fixes:

Just download and re-install the last Security Update.

Like magic, everything is back to normal.