I live in California.
I recently was forced to send my N900 in for repair due to a couple of issues.
Not sure what happened, whether it was physical damage or a software issue, but I could no longer turn it on.

I also had an issue of "white spots" on the screen that other users have experienced too, so I mentioned this in a letter as well. I had not sent the device in previously for this issue because I always assumed it would take at least a month to get it back.

I was impressed with Nokias customer service.
I called them, told them my issues. They immediately emailed me a UPS 2nd day shipping label.

I mailed it 2 days later, they received it in 1-2 days. (This went to a repair center in Alabama)
They took care of all problems, including replacing the LCD display.
and mailed it back to me within 4 days. This is the schedule of how things went right from the nokia "repair status" page:

Current Status Shipped Repaired Original Phone
08/16/10 Repair in Progress
08/13/10 Awaiting Parts
08/12/10 Received
08/09/10 Pending Receipt by the Repair Center

I got the N900 back in my hands on the morning of the 18th.

It took exactly 1 week from the time I mailed it, to the time I received it back in my hands.

Overall impressed.