I recently picked up the effort to make ArduinoISP more reliable and better working on more (hopefully all) arduino models. I started again from rsbohn's last work and try to fix only things that help ...

Tried this on windows 7 SP1 and on XP SP2 (though on XP SP2, composite device stuff must be stripped to bring up leanardo all together). The problem does not occur on linux. Arduino 1.0.2 What steps ...