Man, sorry to hear that... I own I4000 for over 2 years, but quickly realized that the build quality is really poor, almost flimsy. I always carry it with both hands when out of case, and handle it as if it was made of glass, so it's in like-new shape still, but think I've been lucky.
Anyway, I'd suggest an IBM, noticed they are much sturdier. Used to have Toshiba SatellitePro before Inspiron, and it's sturdiness was excellent too, not sure how are new Toshiba models though. I also saw new larger Dell laptops (I8100-8200's), and the "seem" to have better built chassis, but not sure since don't own one. When I'll be replacing my Inspiron sometime next year, I'll definitely get and IBM notebook.... pricier but think it's worth.
cheers
dave