i tried about 30 titles just now, from various categories, and got the same results:
channel version 1.3 - build 110111
serial number 13C1AU002532
software version 4.2 - build 1006
each title marked as 1m 30s
when selected each title doesn't play and returns to the screen for that title.
roku2 xs, wireless, current download speed 18.33 mbps
signal strength: excellent
TWC cable internet
in fact my internet was down most of the day and i ended up with increased speed and a brand new modem and a huge apology from TWC and lots of tests to make sure everything's perfect for streaming. my roommate is currently streaming on her roku2 xs and we have just finished testing our speeds while concurrently streaming on other channels - so i am certain it's unrelated to my connection/speed.
N1000, roku1 XD/s, roku2 xs, roku3