I downloaded the 4.2.2 OTA and installed it via CWM yesterday. I turned back on all location services. Thus far, no reboots. I'm checking Catlog periodically. Plus I also set an Astrid task to be due today. The tell-tale sign of a reboot for me (even when I'm not looking) is the fact that the Astrid reminder will be gone. One day isn't really a significant enough amount of time to declare this fixed. If there's still no rebooting after a week or two, I'll feel more comfortable declaring it fixed.
After disabling all location services in 4.2.1, I only had one reboot over about a month and a half, as compared to a day and a half before. That one reboot was while watching a YouTube video. Most recently, I allowed location via WiFi but left GPS off. Things still stayed stable. Now with 4.2.2 I've got GPS back on. I may even put an HD Widget in the lock screen to see if I can tempt fate further