| Some friends have opined that it is due to drying out of processor's paste,|
I would ignore that opinion. If the paste is correctly applied it will last as long as needed until it is disturbed, drying out is irrelevant. I fail to see how heat generated by the CPU can have a direct effect on the DVD drive.
Bear in mind that this DVD is spinning at up 15000 RPM and are being bombarded by a laser beam so it is perfectly reasonable they are going to get a bit warm. If the only thing getting hot is the actual disc I wouldn't worry about it.
message edited by StuartS