I am at 0 of 500 frames complete. The first frame is due to be complete in about 15 minutes, the Work Unit End is estimated at 10 days, 9 hours.
What does all that mean?
The 500 frame jobs are pretty standard, it means that your 'puter is going to have to crunch through about 500,000 computations, at 10,000 computations per frame. The numbers are a little misleading, for the first frame or two. That sort of job, should be around 1-4 minutes per frame, and you should see the numbers stabilize after the 2nd or 3rd frame. I know, I freaked out, when my first job told me that I'd finish sometime in 2011...
If I understand correctly, and someone will no doubt jump in if not, workunits are broken up into "frames", which are basically like checkpoints - at the end of every frame it stops and saves its progress, and then continues on until it finishes all the frames and hence the whole unit. Once it runs through a couple of frames, it'll have a better idea of how long the whole unit will take - it's sort of guesstimating right now, so don't take that ten days as gospel just yet.