Neowin.net reports that a small number of UK Windows Phone 7 users have been held up from using their new mobile phones due to an activation problem relating to their Live accounts showing up within the operating system.

The problem comes about when a user tries to associate their Windows Live account with the Windows Phone. It comes up with a message stating that "Product Activation Failed" and that you are required to enter a manual activation code from Microsoft support. While this doesn't seem to be too much of a problem, those who have bought their new phones on Saturday or Sunday will find out that the UK support team does not work on weekends and thus you have to wait until at least Monday until the problem can be resolved.

  Windows Phone 7 Live activation issues