said by Nezmo:
Timely. I can honestly say that my 4S has never had so many freeze-ups and crashes. It's been getting worse lately, almost daily issues. I hope this update helps.
Edit - reading the details I'm not hopeful my issues are addressed. Time will tell.
My 4S and my gf's 4 have been having the UI freezing up on and off. Originally just hers, and now mine was doing it. Rebooting seems to fix the issue. I was also hoping that 6.0.1 would fix that, but they don't mention it. Guess time will tell.