I think what people forget here is any new laptop is known to have flaws. One thing people do not mention with the T400 and the T500 is that they offer improvements over the older generations. In particular the T500 possesses a fairly high powered graphics card (ATI 3650). Lenovo is offering significantly higher performance (relative to the other business model laptops) and should be commended for this.
Yes Lenovo made some changes to the keyboard and some manufacturers of that keyboard have introduced a flaw. But I can understand why Lenovo made the changes; a lot of people look at the weight of a laptop when deciding on there purchase. Also remember that Lenovo is being assaulted by HP (in a business sense), who are able to offer cheaper business laptop, albeit they are a heap of rubbish. Lenovo is trying to find a balance here and I hope that they do. Since the last thing we need is HP produced rubbish taking over.
Fortunately the keyboards are able to be interchanged (thanks for clarifying this andyP). I think the mods here have offered solutions to the problem and have done an excellent job trying to help people. My advice as I have stated previously is to just switch over the keyboard yourself or do what I did and get it pre-done by a Lenovo authorised reseller. Yes Lenovo should really fix it for you, but what is the hassle of getting this done worth to you.
Lindz, just order the part and install it yourself, that way you have your laptop in Alaska and no longer need to worry.
Sorry if this is offtopic but I really wanted to put in some positives for the T400/T500 series. Now im just waiting for mine to get delivered on Mon/Tues. 
erik wrote:ole, the information is published in the hardware maintenance manual and on the matching keyboard service TIP page.
alps keyboards are somewhat "clicky" but solid, chicony are clicky but not quite as harsh, and NMB are softer and more quiet. i prefer NMB in most cases as they feel the closest to my favorite keyboards of former 701c and 600 models. your preference may vary.
Hi Erik & All,
An update, I just spoke with a supplier of T6x keyboards. He said he knew a lot about the keyboards and claimed that the keyboard service part numbers are often changed/updated and do not correspond to what is stated in the hardware maintenance manual and keyboard service TIP page. To "prove" what he was saying, he went and picked up 3 keyboards from their stock of T6x keyboards and randomly gave me 3 numbers which did not correspond to either the T60 nor T61 keyboard from any manufacturer. Now how about that, back to square one? 
Btw, I was just informed my custom T500 has arrived at the office.
Waitaminute, the sales page for this danish supplier actually says they sell TP T6x / Z6x / R6x series, but they are all classified under the same keyboard, that could explain why the keyboard service part numbers are different, I didnt have the Z6x and R6x number for cross checking when he gave me the numbers. If my assumption is correct, then I should be looking elsewhere to get the T60 or T61 NMB keyboard. Where to next...?
- Ole
