I've been having an issue with my MacBook (you know, that computer I hide under my desk most of the time) where intermittently, the UI will freeze up for a period of a minute or so and then return to normal.
I came across an article detailing how to reset the PRAM and NVRAM that seems to have resolved the issue.
Resetting PRAM and NVRAM
- Shut down the computer.
- Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.