Sony sent me a replacement batter for my t340P with instructions to send the old one back.  I can’t say that I stayed awake at night worrying that my laptop was going to erupt in flames.  Now the idea of having two batteries is kind of appealing.

Is everyone else sticking with the plan and sending their ‘bad’ batteries back to Sony?

I sent mine back. I guess i just want to be in good with Sony in case I ever need assistance from them and to have a good repoire with them.