Can't really comment on it, human eyes are no good to spot changes. You should probably do a 'diff' on it. Furthermore, the function findknoppix() depends on function parameters got passed it, so maybe the changes is outside findknoppix(). In any case my comments are casual and not to be taken seriously. What's important is that imperically, you guys are noticing distinctly different behaviours, for two entirely different versions; whereas since I have never quite used knoppix 6.4.3, so I am more inclined to side the OP.