In Reply to: Ubud posted by retiredtraveler on Sunday, 31. March 2013 at 12:22 Bali Time:
it depends on what you consider to be Ubud - the block of Monkey Forest Rd, Hanoman St & Jl Raya Ubud, or the whole area that Ubud is. The "block" and areas nearby are generally crowded from around 10am to 4pm each day, but are reasonably quiet other times, and other areas of Ubud can be very quiet most of the time.
Of course,I'm assuming you are referring to tourists when you ask, the local population is very large and traffic in some areas can be very heavy during the day.