You've been lucky! I guess it probably has a lot to do with how much they "over-sell" your node. Seems like popular prime time shows are constantly getting "no channel available" errors, even when I check 2 minutes afterwards and channel is fine.
Maybe it also has to do with how well your local TWC area network is run and if local people have a clue what they are doing, or even care? Not sure.
Samsung SMT-H3272 - Nav.126.96.36.199
SA 8300HD (no C) *AZiO ENC311SU41* eSATA- WD black- 1TB - it works!-
-8300HD no more because TWC deliberately made it unusable in my area! :-/ :-(