I purchased a new Microsoft Surface tablet computer on October 26, the first day the new devices became available. The Microsoft Surface runs the new Windows RT operating system. I also ordered the (extra-cost) Touch Cover that includes a built-in keyboard. I then wrote a Plus edition article on October 31 at http://eogn.com/wp/?p=22758 describing my experiences.
I haven't had any problems with my Surface or its keyboard. Then again, I haven't used it much. Now reports are popping up in the trade press about many users having problems with the Touch Cover keyboard. It reportedly has a molded seam that splits within a few days of use, exposing components inside the keyboard. Microsoft reportedly is offering free replacements for defective keyboard covers.
A small number of problems with the Surface's audio have also been reported. The audio reportedly switches off for no apparent reason. However, the culprit may be the same Touch/Type Cover keyboards, which contain a MUTE key. Some users are guessing the cover detects a press of the MUTE key even when the key is not pressed. The problem reportedly does not occur when the cover is detached.
Again, this only affects the clip-on cover and keyboard. There have been no widespread reports of problems within the Surface itself.
You can read more in hundreds of online reports if you start at http://goo.gl/rZaEP.