It looks like four bands of HSPA is too much for a BlackBerry to handle as Japanese carrier DoCoMo has suspended all sales of the Bold due to overheating issues. Since its February 20th launch, DoCoMo has sold approximately 4,000 Bolds but after receiving more than 30 complaints about overheating keypads while charging, DoCoMo decided it was best to halt sales while RIM investigates the matter. RIM is being quite tight-lipped on the matter and would only comment with, “This issue appears to be specifically limited to the BlackBerry Bold devices sold in Japan since last week and sales of BlackBerry Bold devices in other countries are unaffected by this matter.” RIM went on to clarify that faulty batteries are not to blame. For those of you scoring at home, this brings the number of carriers that have suspended sales of the Bold up to two thus far. Anyone taking bets on who might be the third?