I bought one of these last week. It arrived quickly and was clearly brand new (Evesham on Ebay call it ‘warehouse clearance’ stock) but also clearly damaged in manufacture with the area around one of the rear screws cracked. This doesn't prevent the box from doing as it should so I negotiated a partial refund from Evesham (v. straightforward it's worth saying); it's upstairs now with 2 x 500gb Samsung drives happily spinning away.
Following the instructions on the wiki I've upgraded the M-Box to firmware 2.1.06 and installed various modules. The only problems I encountered were due to my impatience and inexperience with the command line.
The M-Box arrived with no documentation at all and no CD of drivers or software.