We recently purchased our first high-efficiency front loader set.  We were excited, and have a new baby in cloth diapers.   Everything worked great for the first 2 months... One day the dryer stopped working, and would only hum.  Service guys came out, and said the motor was fried and the belt broke.  He said he wasn't sure of the cause of failure, and there were no socks or anything stuck in the works.  Now I'm excited every time the dryer finishes a load and hasn't died.  Guess we'll be holding our breath for the next failure, and hoping it happens before the warranty expires.