The current luathreads does not compile with lua-4.1-work4 without modification and unfortunately lua-4.1-work3 is not available for download from http://www.tecgraf.puc-rio.br/lua/work/ Does anybody have luathreads working with work4? Also, will luathreads be included in the Lua core release? Best, Blair -- Blair Zajac <blair@orcaware.com> Web and OS performance plots - http://www.orcaware.com/orca/