From: Chad Fowler Date: 2004-08-10T10:13:58+09:00 Subject: 1.8.2 preview bug? I haven't had time to really investigate this, but I've boiled it down to a stupid repeatable test case. $ cat mm.rb class Bug define_method("asdf") { asdf } end Bug.new.asdf $ /usr/local/bin/ruby -v mm.rb ruby 1.8.2 (2004-07-29) [powerpc-darwin7.4.0] ^CIllegal instruction It also seems to be an old problem: $ ruby -v mm.rb ruby 1.8.1 (2003-12-25) [i686-linux] Segmentation fault Chad