One of the common Mac troubleshooting steps everyone always seems encouraged to try first is to "repair disk permissions" in Disk Utility.
This process usually finds random odd problems, fixes them, and on rare occasions it actually makes a difference.
How on earth are random files ending up with their disk permissions changed in the first place?
That seemingly crucial operating system files are ending up randomly tampered with is actually a bit disturbing to me. What is causing this? Why after a decade of telling people to "repair permissions" hasn't some sort of lock been applied to prevent permissions from being inappropriately changed in the first place?
What is the real story here?