Yes mine's the same, collected in April but gradually settling down. Rear passenger side squeaks most, definitely the door rubbing against the seal. The forward most part of the door touches the seal first, resulting in maximum seal compression in that area and the most shear against the seal. After driving off I can sometimes hear the seals creeping back to a more neutral position, particularly if the car is not square on whilst being driven over a sharp speed bump. I don't think it's a problem with the seals, just how the rear doors have had to be hung so they close properly. A little Vaseline applied locally helps.
