So it happened... I got dust on my sensor it seems. Small speck appears in all my pictures, lower left hand corner. Tried three local shops, and none said they do this. Ritz (where I bought the D70s) said they could send it out, as did the two others. Anyway, what do you guys do? I'm not ready to give up on low cost solutions, but I've gone the blower route to no avail.