DVDdoug:
i think those "grounds" on the breadboard are not connected together... I think each group of 10 (or maybe 5) is isolated from the others. You can check that with an ohmmeter (multimeter) or just add jumpers to make-sure all of the grounds are connected.
I just checked with a multimeter and they are. On the breadboard I am using, the rails are split in two in the middle but otherwise, the 5 holes blocks are connected together on each halves.