>Mine has been solid except for one issue after upgrading to Mango. If I use wired headphones, it locks up when listening to music. Microsoft is investigating. but I bought bluetooth headphones last week and problem solved. My model is the HD7, but the model names will vary based on carrier and country.

In my case, I have no intention to use it for music. I only listen to music from my system at home or in the car.

However, bluetooth is something I need to check for. As, with the new law here, it is now prohibited to talk on phone while driving.