According to research firm IDC, things are not looking great for the PC industry. The firm says that PC sales saw "the steepest decline ever in a single quarter" this year (excluding tablets and notebooks with a removable screen or keyboard), down 13.9 percent to 76.3 million from the same quarter last year. If you'll recall, thats more than double the loss the industry experienced in the fourth quarter of 2012, which saw a 6.4 percent decline. Back in January, IDC noted that sales declined year-to-year during the holiday season the first time in more than five years. Today's newly reported results from IDC mark the fourth consecutive quarter that PC shipments have fallen.