"Off the top of my head.... We had one unit with a dead MCU clock crystal (extremely rare). One radio wouldn't turn off because a mic wire was touching another component (we're looking at heat shrink for that). Two had problems with EEPROM due to a firmware bug I found and fixed at 1:30 AM on Monday morning. This firmware is already in beta test.Mostly just new-product syndrome. We really are on the verge of serious shipping increases."
I have still to decide if/when to order one. The initial reviews on www.eham.net have been excellent.