I am having the same problem all of a sudden. Pre and Post roll - 2 bars. If cycle is off, no pre roll. unable to turn off post roll. Metronome/Record/Play/Transport settings - everything related off.
I am using 9.1.3 on 10.6.4 Mac Pro 2x2.66 w/ RME FFUC buffer set to 512.
Any other Ideas?