Microsoft's Skype has temporarily disabled People Hub, which collates contact information in Windows Phone 8 Preview 2.1 app, as the feature had been 'causing issues with device stability.' The firm, which had updated its applications for Windows Phone 7.5 and Windows Phone 8 with some new features, revealed that the 'experiences are not yet final,' and added that some features 'are work-in-progress and may not function consistently.'