Dear all, now, that's embarassing: some debug code was compiled into version 3.4rc1 which let all but the simplest assemblies take, literally, ages. So, 3.4rc2 now supercedes rc1. Please get it at SourceForge: http://sourceforge.net/projects/mira-assembler/files/MIRA/development/ I'm sorry for any inconvenience that has caused. Best, Bastien