The bugs haven't been fixed primarily because there are dozens of people who have written subclasses to go with it and I no longer work with e-commerce, so I was reluctant to change things that may break other people's subclasses by trying to update a module that I don't even really use anymore (and I don't have access to the test environments for any of the processors anymore).

Ivan Kohler has taken over maintenance on many of the subclasses that I used to maintain (and has written many more) and has been working on the next generation of the module. You can find more information on his effort as well as a developer mailing list you can join if you are interested in helping him out at http://420.am/business-onlinepayment/ng.html.

I've left the last version of it that I wrote on CPAN simply because there are so many people using it, but I'm not actively maintaining it.