Re> Illegal Instrunction

This is a Debian issue, not an R issue.

Almost certainly you are running an ATLAS tuned on a machine other than 
your own.

ATLAS is designed to be tuned on the target machine, which is easy to do 
if you install it from the sources.  Debian provides pre-built versions, 
but these need to be matched to the actual CPU and it seems the matching 
has gone wrong for you.

(On RedHat systems I have seen precisely this when R built with an ATLAS 
on a P4 was run on a PIII, by someone who mounted the wrong file system.)

OK I found the problem.

locate libblas.so.3 showed there were two such files,
one in /usr/lib/, the other in /usr/lib/atlas/

removing the atlas installation cured the bug.

Not sure what I should do if I later find that I need
atlas for some reason.

cheers
David

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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
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