Greg - did you end up taking the camera in?
I have just noticed a similar issue with my D70... and in a similar spot.... it usually comes out as a single bright green pixel (or perhaps a small group of pixels) but also sometimes comes out with a (slightly more faint) line leading down to the edge of the shot.... I ran the dead pixel test program posted earlier in the thread but it didn't pick anything up.... does anyone know - does this mean it is a "stuck" pixel/s, rather than "dead" one/s?
Looking back through my photos, it has actually been there for months and months - but I have only just noticed it! Of course, now it's the first thing I see in each and every shot...
Since the camera is more than 12 mths old, and as I am no longer in the country where I bought it, I will probably just leave it for the time being... if I send it in to be fixed, it could well take quite a while..... being camera-less (well, dSLR-less) doesn't sound much fun!
This is the offending pixel/s:
... and the above crop is from this photo (in the bottom leftish area.... ):
This is one of the first photos it appeared in... as I said, it's usually just a dot rather than a line... and isn't always visible - seems to depend on the background colour... but still.....
*sigh*... dammit.