Otellini's comment aside, Gillen says Microsoft's new OS isn't all that problematic.

"To my knowledge, and from what I've seen, I don't think Windows 8 is a buggy product," Gillen said. "But it is a product in it. Any time you introduce a lot of change, there's potential for some surprises."

Another analyst, Michael Cherry of , says usability issues may stem from Microsoft's claim that Windows 8 will work with Windows 7 hardware. Cherry has been running Windows 8 on his Windows 7 tablets.

"The operating system is very strange on those systems," Cherry said. "The touch is very intermittent. Sometimes, I touch and it activates an application. Sometimes I touch, and it doesn't appear to do anything. Then I'll touch it again, and the next thing I know, I've got two or three copies of the app running."

Similar to the issues we saw with Windows Vista, may just be for the operating system's established base.