I have recentlly purchased DXO software mainly in order to correct lense distortions and CA, though it is very slow (2x2.3 Ghz G5 with 5 MB ram) it gives good results but needs to know thru Exif the distance of focus.
Apparently the Canon 1Ds2 body doesn't provide that info into Exif, I can type it manually, but it's just a guess, not very precise nor accurate.
Any idea?

Canon, if you read this, please can you add that info within the next firmware update?

Well,
This is a known issue and Michael wrote about it in his review (here, look for "The Distance Problem"). Additoinally, some lenses do not report distance (ex: EF-85mm f/1.2, version 2 does).
Let's just hope that Canon will hear you in the next iteration of their cameras?

I'd take a look at PT Lens, if you haven't already done so. Pretty good, some people compare it favourably to DXO, and it's free.

Ah sorry - just re-checked their website and it seems it's not free any more

Not free anymore but ten bucks is a modest fee for a great product. On the Mac, I paid $40 for the "same" software and I'm also satisfied.

Thanks for your answers
I never could find the way to use and install PTlens on my Mac, even when it was free! Duh!

I agree with Nicolas. I use DXO to not only correct for lens distortions, etc, but have been using it as a RAW converter. It is very annoying to "guess" the focus distance several days after a shoot, for every single frame! C'mon Canon!!!
Dave