Hello
I have a T23 - no problems, great laptop
I have a T41 - he is still at a local laptop service, having problems with the video chipset...because of some flex in my bag
I have a T400 - one month and no problems. Good laptop, nice looking, good performance and an interesting feeling when I compare him with other brands - looks, design, quality, thinklight

and so long
In my opinion all the goods today have some poor quality than the older ones: cars, electronics, everything. I never compare the quality of a T23 with a T400, that's the era - never compare the quality of an old mercedes with a new one's.
But being a Thinkpad lover, they have to be really worse compare to the other laptop brands to make me change my mind and give up on T model

But...as I look on my T400, I'll still be a Thinkpad guy many years from now
sorry for my english, not a native english speaker