so sitting right next to my router, my wifi signal strength is at 3 bars (full) and the speedtest app shows like 4mbps while my broadband plan is 8mbps. going to the next room drops that speed to 0.2-0.4mbps. is this normal ? i was under the assumption that wifi n meant better range + speeds but this seems to be worse than my motorola droid. using ios 4.1 w/o jailbreak