So I just got the Surround and noticed that with just barely any usage, just news, etc.. that the device is getting really warm. It certainly gets warmer, quicker than my DroidX does..
Could be load or just the fact that your comparing a 65nm chip to a 45nm chip guess which one produces more heat. I felt the same way when I left my d1 for a d2 the d1 would heat up quickly. Now im waiting for wp7 and the msm 8655 to meet that will be good
Mine got hot (bottom back of phone) as the battery got low last night. Like little red light blinking low. I wasn't using it, just sitting on the table.