This is all because of races in older versions of glibc. Namely those two (now fixed) bugs are at fault: http://sourceware.org/bugzilla/show_bug.cgi?id=5058 (a.k.a. http://bugs.debian.org/443660) http://sourceware.org/bugzilla/show_bug.cgi?id=5443 (a.k.a. http://bugs.debian.org/456531)
In upstream glibc, those bugs are fixed with version 2.8. In Debian, 2.7-11 has the backported fixes. I have not been able to test on Ubuntu yet, but I assume this means the bug is in all versions before Intrepid.
This is all because of races in older versions of glibc. Namely those two (now fixed) bugs are at fault: sourceware. org/bugzilla/ show_bug. cgi?id= 5058 (a.k.a. http:// bugs.debian. org/443660) sourceware. org/bugzilla/ show_bug. cgi?id= 5443 (a.k.a. http:// bugs.debian. org/456531)
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In upstream glibc, those bugs are fixed with version 2.8. In Debian, 2.7-11 has the backported fixes. I have not been able to test on Ubuntu yet, but I assume this means the bug is in all versions before Intrepid.