Fatal Python error: GC object already in linked list

[Neil Schemenauer]

Jimmy Retzlaff wrote:
> I've upgraded to 2.2.1 and spent 4 days trying to isolate the problem.

:-(

> In 2.2.1 the problem is still there, but it's not as consistent.

Have you tried setting the GC threshold low (e.g. 5)?  That sometimes
helps trigger these kinds of bugs.  You should also build with Py_DEBUG
defined.  That often helps too.  If you could, also try the CVS version
of Python.  pymalloc is now enabled by default and it does some some
extra checks if Py_DEBUG is defined.

  Neil