Macbook gets REALLY hot.

[capps]

I have an aluminum macbook. I've had it since April 09 and I absolutely love it. I purchased a 22" Dell external monitor that i am connecting via mini display to dvi adapter. I've just been using this for about three hours and I've noticed that my laptop is REALLY hot right by the adapter.

Is this a known issue or have any of you experienced this? Whats the deal?

 

[Salgonza]

mine does the same thing. I've found to keep it on a stand kinda helps. but it always gets hot. and thats that i use it at work. so it's on for atleast 10 hours.