I have been thoroughly enjoying my XM at work. Like I mentioned yesterday I was a bit surprised to get such good signal being at least 50' from a window (I had said 20 but I think it's more like 50). Plus there is a tremendous amount of electrical noise. Well, I found out that the signal is, in fact, somewhat tenuous. I went to the office near the window where my office mate has a microwave. I popped in my lunch and returned to my desk. No signal. Crap. As soon as the microwave stopped, signal! So it looks like I will not be able to listen to tunes for the early portion of my lunch hour as people heat up their meals.