extract of changelog:
2002-03-11 Tom Duffy <Thomas.Duffy.99 at alumni.brown.edu>
* backtracing will work right when we call kdb() directly.
Ethan Solomita <ethan at cs.columbia.edu>
* kdb v2.1-2.4.18-sparc64-2
ftp://oss.sgi.com/projects/kdb/download/v2.1/kdb-v2.1-2.4.18-sparc64-2.bz2