This is a bit of a weird one. I had the user profile incremental synchronization job set hourly, but it never showed up as being scheduled.
If you notice here, it shows up as “No schedule set.”
Change the schedule to daily…
…and voilà! It now shows up as being set.
Not sure I’m going to spend too much time on this one until after I upgrade to SP1.
User Profile Service Synchronization
User Profile Service Scheduling