A hot mouse?

Coolermaster probably used cheap LED bulbs in the mouse. Cheaper bulbs are not as efficient and will use more power and thus generate more heat in the conversion of electrical energy to light energy. Add to that the fact that the mouse is covered with a thin film of rubber to increase grip, and you have an "insulation" effect trapping the heat from the bulbs. All of this is hypothesis but makes sense to me. I don't see any problem from this. Frag on...
 
I bought a cm alcor and I have the same problem... I could turn off the top led but I notice that the heat is comingr I'm bottom from the sensor... And that heat goes up to the top... I'm not sure if I should rma it... I already rma the Alcor before because the mid click was defective and when I clicked it it would click 2 or 3 times...