The Windows Phone 7 UI is undoubtedly very, very nice to look at. The Live Tiles fade in and out across the screen with updated information based on recent events such as messages, emails, missed calls etc.
Annoyingly though, according to xda-developers.com, there are some applications that break this feature in their attempt to utilise it themselves. A forum member has developed a fix for this and you can link yourself to the xda article referencing it HERE
Be aware of course that to complete this action does require access to the device registry an as such should only be performed if you are competent and confident in such a procedure.
Clove always recommend a full system backup for attempting procedures such as this and cannot be held responsible if your warranty is voided or damage is caused to your device as a result