Hello, The latest ruby cvs seems to work ok? bash-3.00# ruby -r yaml -e 'y 1234567890000000000000' --- 1234567890000000000000 bash-3.00# ruby -r yaml -e 'YAML.load 1234567890000000000000.to_yaml' bash-3.00# ruby -v ruby 1.8.4 (2006-03-04) [i386-solaris2.10]