Ubik: this issue is closed, as we believe that it does not exist anymore. If you still think there is a bug surrounding mkdtemp, please make a new full bug report. Structure your report as follows:

1. this is what you did
2. this is what happened
3. this is what you expected to happen instead

Be as precise as possible. For example, reporting the exact user name of the user might be helpful. If you can, debug the problem, e.g. by arranging to display the value of 'path' and 'b' in line 102 of ntpath.py (assuming the error still occurs on the same line as it did for Markus).