Microsoft Surface RT Screen

Microsoft may have shipped as many as 1.25 million Surface RT units to its partners last quarter, but it's not selling a bunch of them. According to new research from IHS iSuppli provided to CNET, Surface sales were "significantly lower, maybe on the order of 55 to 60 percent" of the 1.25 million units figure. As CNET notes, that means Microsoft may have only sold, at the high end, 750,000 Surface RT units during the quarter.

This isn't necessarily cause for alarm  – Microsoft's Surface RT is still gaining its feet and likely needs time to make its way into the enterprise. Additionally, IHS iSuppli said sales of overall shipments often fall in the 60 percent range for Android handsets. It appears Microsoft also stopped production of the tablet as it continues to sell off the existing lot of tablets that were already produced.

Microsoft isn't out of the clear entirely, though. Apparently return rates of the Surface RT tablet are "very high," which is "indicative of a problem," the research firm said. The issue? Likely the new Windows 8 operating system, which delivers an entirely new experience from desktop-heavy Windows operating systems of the past.