> Sure, but this isn't something that is caused by the load, this is
> noise.as long as tracks won't be too long and paralell, i doubt
> if the PIC would notice anything.

You may be right - I can only relate experiences with my own
circuits, and I've found problems can come from unexpected
places, which is why I assume nothing these days. For example,
two instances where grounding the crystal can fixed a whole
mess of poor performance in completely different boards, yet
this was not required in many dozens of other projects that
used the same crystals. As far as the particular LED circuit in
question goes, 100mA is a lot of battery power being switched
and I just think it prudent to make provision for noise-reduction,
whether the noise be through tracks or radiated. My 2c FWIW

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