Is pl/pgsql debugging broken in PostgreSQL 9.0, or is it just me?

Hi folks,

I had the debugger working in pgAdminIII at one point, some time
before upgrading to 9.0, but as of right now I can't seem to get it
working using the usual steps. I believe it may have something to do
with the DLL not loading correctly, because the following query:

LOAD '$libdir/plugins/plugin_debugger.dll';
show shared_preload_libraries;

...returns a blank row. The DLL is present, and if I change the load
string, it complains, so I'm pretty sure it's finding the DLL okay,
but not successfully loading it. show local_preload_libraries returns
the same thing.

Any ideas?

Thanks,
Kev