i can assure you that our 'jumped' pad was in the cosmic ray category
and sounds just like brad's

i looked very carefully into what might have caused it and wound up
replacing the footprint with no good explanation

now that i recollect it, i *think* it did not respond to editing the XY
coords to fix the position
i think it kept jumping until i replaced the footprint

it was a 1mm pitch staggered dual row pattern (thru hole) and 1 of 20
pads jumped about 1/3 of the pitch in one axis

Dennis Saputelli

Abd ul-Rahman Lomax wrote:
> 

> Since most of us have never seen a pad move as described, unless one of
> these possible causes rings a bell, we may not be able to identify the
> cause, *unless* the behavior can be reproduced. For all we know, it was a
> cosmic ray....
> 

-- 
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