We've been playing around with using nested functions recently; they've got some interesting applications, but now that we've learned more about how they are generally implemented, we're concerned because it requires making portions (or all) of the stack executable. Is this *always* true? If so, should we be avoiding them completely so as not to run into systems that disallow executable stack completely and would not be able to run our code? If the stack is marked executable (even partially), that seems to run some risk of buffer overflow code execution anyway... -- Kevin P. Fleming Director of Software Technologies Digium, Inc. - "The Genuine Asterisk Experience" (TM)