I have not changed the code at all so whatever is "out of the box" is what it is on our site.
I asked one of my moderators that use the classifieds a lot to make a list of issues we are having and here is what he came up with:
1. When a reserve price is set and the auction ends. The listing says the auction has closed, but when you close the auction manually the system sends a win notice to the highest bidder that did not meet the reserve price.
2. No way to cancel bids/end listing.
3. Reserve price can't be edited. (even with no bids on item)
4. Reserve and Buy it Now price should not be one in the same.
5. When the Buy it Now is used, The auction does not end automatically. And when you close the auction, Win notices are sent to the high bidders.
Some of these things may be by design but this is what seems to be the issues that are the source of our problems.