We've been almost certain that this was coming since mid-October. What we were told at that point was that MPC's finances were shut down - hard - and as a result they had no working capital to purchase any product. In other words, they haven't been able to build or ship product since the middle of October. (This was before they went Chapter 11... and before they were delisted from NASDAQ.)
Fortunately, we stopped buying desktops from them a while back... but unfortunately we were still buying laptops from them. In fact, we just bought about 10 laptops just in September. So much for the 3 year warranty we paid extra for on them.