[boost] [multi_index] spurious error in CW 9

This test occasionally fails: http://tinyurl.com/72xcb but there's no error output or any failure indication, nothing. The problem shows only at times, so I guess it'll have to do with the compiler being low on resources, but couldn't say for sure. Any idea? Joaquín M López Muñoz Telefónica, Investigación y Desarrollo