Product review (1 stars): Faulty Microwave
Started using the unit in January 2013, Microwave is now arcing constantly, never had problems with our cheap counter top unit from Sharp (from 1999). Oven works fine.

Update:

Bill gets small cover out of the microwave and is suprised that there is no burnt charcoal on the other side.
B:  I'll get the new one on and see what happened,
J:  Lets clean the opening and get rid of the black powder,
B:  Whats that ?
J:  Looks black inside like burnt stuff,
B:  Burnt ??
Than he got his head in de micro.
B:  OMG,
J:  What ??
B:  Look at it, the heat tube is burnt OMG,
J: That was the electric smell coming out of it,
B: Don't understand why it was working sometimes, this is big stuff !
J: So now what ??
B: Order a new unit and come back.
J: Now you need to get the whole walloven out ?
B: No only the micro.
J: Not a big deal ??
B: Well.............

Yes, the whole unit needs to be removed from the wall. So we got the magnetron replaced under warranty, it would have been a $500-$600 dollar job. Now, a few months later the oven doesn't seem to reach the correct temperature.

Update January 2014, the repairman came for the oven which was getting worse, either the control board or the fan (or both) is/are defective, he'll be back in a couple of weeks to pull the unit out of the wall. Purchased the extended warranty. To be updated....