Dave,
FWIW, pgAdmin seems to crash for me (1.10.1, OSX 10.5) whenever I let
the query history get too long or open too many busy (15+) query
windows. Since the crash is quite rapid, I haven't been able to
diagnose the exact tipping point. I assume it's probably bad memory
management by xWindows, but who knows.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com