[mod_python] session locking causes hang with mpservlets

Daniel Popowich wrote:
>>>The problem is that even though one sets self.session to None,
>>>this doesn't mean it will be deleted immediately as one is in part
>>>at the mercy of the Python garbage collector.
[...]
> Thanks for digging into this Graham.  Yes, I thought this would be
> sufficient:
> 
>             self.session.save()
>             self.session = None
> 
> as the garbage collector would clean up the session.

I have noticed that even calls explicitly to gc.collect() don't necessarily 
do the job, either... so in general, if you've got an object with an 
explicit __del__ method, it's best to del it explicitly.

Nick