If you've been trying to use the Windows Phone app Last.FM over the past few days, you've probably experienced a little downtime with the music app. Turns out the Last.FM servers haven't been playing nice.

Last.FM posted an explanation over at their blogsite reporting that things should be getting back to normal soon.

"A hardware failure has led to one of the most serious system outages we have experienced for a long time, and we are very sorry about the inconvenience caused to our listeners. At this moment everything should be on its way back to normal, but it could take some time for all services to return to a fully stable state. We want to apologize for this outage, and explain the problems that have led to the difficulties you may be experiencing now."

For those not familiar, Last.FM is a Windows Phone 7 app that allows users to get endless personalized radio, concert recommendations and quickly look up music from your Windows Phone. It's a free application and available here (opens your Zune desktop) at the Marketplace. Just understand that the solutions Last.FM are putting in place may take a while to stabilize everything.

Source: Last.FM Thanks goes out to Bryant for the tip!