On the current debian unstable, updated all packages today.
[EMAIL PROTECTED]:/tmp$ cat crash.py from numpy import array sel = array([False,True]) p1 = array([11.]) p1[sel] = p1 [EMAIL PROTECTED]:/tmp$ python crash.py *** glibc detected *** python: free(): invalid next size (fast): 0x0821bc60 *** Feel free to ask for more information/tests, that may be useful in order to track this bug down. Ondrej -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]