Zune Marketplace Down For Maintenance

Microsoft has announced that as a part of their continued efforts to improve the Zune Marketplace service on XBox Live, Zune Marketplace will be undergoing scheduled maintenance for up to 24 hours, starting at 10pm Pacific time on January 25th.  During that time you will be unable to rent or purchase video content.

However, with that being said, your existing video library will continue to be available.  XBox Live itself should not be affected by this maintenance, however, if it is acting strangely on the 25th this is probably the reason.