BALOO,
I know what your problem is. I have the same exact problem and I even posted what I did here on the boards.
Okay move the dryer forward from the wall and inspect the flexible plastic exhaust tube. You will notice that it is filled up with water.
This happens when the exhaust is kinda clogged up. The condensation will accumulate instead of being "blown out" of the exhaust.
You can remedy the problem by simply taking off the flexible plastic tube and then cleaning the tube, the exhaust of your dryer and the hole in the wall where the exhaust attaches to. Make sure that the entire exhaust system is cleaned.
While you are at it, clean the lint and other debris under the dryer.
This should take care of the problem as it did mine.
email me if you need more instruction.
riddler