Similar problem here
I sold a new and boxed copy of Adobe Photoshop CS3 on ebay, and within a short time had an email from a user called "metropolis" asking details about the label etc. I replied and within 10 minutes my perfectly legal copy had been pulled from ebay. I asked ebay why and they told me that it was illegal to sell pirated or copied software. I replied that it was brand new, fully licenced but they were not interested. I re-listed the item and within 10 mins again got an email from a "prospective buyer" - Metropolis again - and guess what - pulled again.
These people are a nightmare, I was made to look like a crook to prospective buyers after my auction was closed prematurely, with no comeback to ebay.
Skull and crossbones 'cos some people DO sell pirated software - JUST NOT ME !