Comment 7 for bug 270348

I tried removing all the SER files in use prior to using 10.9, it has not made any significant difference. The guide continues to miss entries, sometimes in blocks.

The most recent missing programs all seem to come about when the OLD schedule contains two or more programs that are replaced by one -- the updated schedule has a 2 hour program that is replacing 2 one hour programs. Today in particular the biography channel (BIO 266 on DirecTV) replaced it's regular programming with a Paul Newman retrospective and Discovery (DSC 278) replaced it's regular programs with a 2 hour special called the "Ten Commandments of the Mafia". Both these updates left a 1 hour block with no program and the old one hour block -- the empty block is at the start of the timeslot, the old program that wasn't removed starts in the 2nd hour and ends at the same time as the new program should have.

Old programs: 00:00-01:00, 01:00-02:00, new programs: 00:00-02:00. Guide shows blank 00:00-01:00, old program 01:00-02:00.

If you need these or other similar events, let me know.