Swelling Battery on the 17" MacBook Pro?

Hardmac claims to be receiving complaints from Apple lovers , who say the battery on the 17" MacBook Pro is swelling - pointing to a possible defective series of batteries.

I am the system administrator of a research lab and I have been facing the "swelling battery" issue. among 4 MacBook Pro 17" Core Duo ordered, three of them had swelling battery, and should be replaced. The first sign of the problem that will lead latter on to the swelling syndrome is the random shunt-down of the notebook when running on battery. sometimes, it can also be identified by a lower reactivity of the trackpad, due to the pressure of the swelling battery.