(OT) Linux limits

Sorry for the off-topic question, but...

I've got a (laptop) system running Mandrake 6.1 which is configured
out of the box to disallow core dumps from users. root is allowed to
increase the size limit (from tcsh, use "limit coredumpsize
unlimited") but users are not allowed to do this for themselves.

Where does one specify this parameter on a system-wide basis? My older
RedHat boxes all have a non-zero limit for this parameter, and allow
setting the limit to infinity by users. Don't know if Mandrake is
configured differently from RH6.1, but until I get this adjusted it
doesn't make a reasonable development machine...
                 - Thomas

-- 
Thomas Lockhart                lockhart@alumni.caltech.edu
South Pasadena, California