[Relsenlilky]

try fitting a ferrite RF choke to the antennae, all you need do is go out and buy a small ferrite choke donut and pass the antennae through the choke so that it loops around the ring on the way through.

that should sort things out, also see if the 40 MHz intolerance mode (fat channel) is enabled in the driver setting.

also see if the roaming aggressiveness setting is set to low, so it don't keep trying to search for stronger signals.

and play around with the send and receive signal settings.

mines set to max which enables maximum coverage

or place a piece of electrical tape over the main and aux inputs on the card if you suspect it grounding out on the casing.

Gonna pass this information to the thread, thanks!

It varies... the 'tock' models run hot, the 'tick' models don't. So the latest one is pretty good, my MBP mid-2010 is also pretty good. But early 2011 models ran hot.

Obviously if you game they get warm, but not as bad as some people make out. OS X is a decent power manager IMO.

Well gonna have a look today. I might buy one, and then request a refund for the Dell.

This is a common problem with metal-chassis devices and it's difficult to design around. It's why portable devices that are made of metal often have plastic strips or slots near their edges. My Dell Latitude and older ASUS U-series laptops both have them. Various iPods and iPhones have them. Various tablets have them. My old Nokia N8 had them.

There's nothing you're going to be able to do about this as an end user except to use an external WiFi adapter instead of the internal one. The chassis itself is attenuating the signal.

On that basis, how does Apple solve the issue of attenuation?