A further set of comments:

1. I'd say you should wire up both VSS pins on the PIC - I'm sure
they're connected internally, but I wouldn't rely on that.
2. You need some sort of bypass cap between VDD and VSS, probably
around 0.1uF. It should be right near the power pins of the PIC. Oh,
the joys of the chip randomly resetting / skipping blocks of code when
that isn't there...

Good luck,

-Randy

On Sun, Apr 13, 2008 at 6:14 PM, Jinx <joecolquitt@clear.net.nz> wrote:
> > The first rule of programming is nothing works the first time,
>  > ever. :-)
>
>  I'm sure if you asked you'd have more than enough eyes to give
>  a free critique. It doesn't look a very complicated board. The
>  only note I might make is that where possible I try to use as much
>  copper as possible, so perhaps widen the tracks. I think many of
>  those (what are they - 10mil ?) could go to 50mil
>
>  http://www.ian.org/HD-Clock/HD-Clock-Schematic.png
>
>
>  http://www.ian.org/HD-Clock/HD-PCB.jpg
>
>
>
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