I have a 2003 Altima 3.5SE with about 3600 milies on it and the ride is nice and firm. I believe there is a TSB for the rear shocks on the 2002 Altima somewhere. Try searching online for the TSBs, as I don't have a direct link.
2k miles on a 2k2. I think I had 2k in the first month!!! Yes I thought the ride was strange at first but it settled down after the first month or two of driving. Check you tire pressure too esp with the cold weather.
Hehe, well, I bought it brand new only 3 weeks ago
It was one that was still sitting on the showroom floor at a local dealer. Not sure why they didnt stick an '03 on the showroom but I figured that was good since it didnt give people a chance to test drive that particular car and "whomp" on it.
But anyway, yeah, I've kept an eye on tire pressure. I think that the car might just need to settle in a bit and also I'm coming from driving a Ford T-bird, and I know that American cars generally have a totally different take on suspension than Japanese cars.