[Twisted-Python] Woven application, objects not collected.

[Syver Enstad]

I have a serious problem with some woven applications where deferreds
and their results returned from wmfactory_ methods are not garbage
collected. They just stack up in gc.garbage. The python documentation
states that the contents of gc.garbage are objects that are part of a
cycle can't be collected because they have a __del__ method.

Any help on this issue would be really appreciated.