contification paper

[Henry Cejtin]

For real times?  I would say no way.  I suppose it might happen on a machine
with more than 1 CPU since I think there are some hacks using the CPU time-stamp
register, and they aren't precisely synchronized with 2 CPUs.  Even then I
would be very very surprised if it actually happened.
I guess it could also happen if you changed the date by hand.  NNTP, the network
time daemon shouldn't cause this to happen since it speeds up or slows down the
clock, it doesn't reset it.