Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> writes: > (7) It occurs in Python 2.3, 2.4 and 2.5, but not 2.5.1. > Do we treat this as a solved problem and move on? I'm not comfortable with this. Better to identify the cause for certain. I'll look at it sometime if I get a chance. I have some 64-bit multi-cpu machines I can try it on.