Oh no! I think I might be experiencing the same problem, oddly with almost exactly the same time to import from iPhoto, just shy of 7 days...
I also posted this problem to the form and am actually on the phone with Adobe support right now. I have an iPhoto library of ~15,000 photos and I didn't expect it to be very fast, but it's taking an average of at least 40 seconds per photo to import, and it has kept complete focus of LR so I can't even confirm that it isn't importing duplicates. By my calculations it should take over 166 hours to complete the import! Something has to be wrong here. I've been going for over 48 hours and am scared to stop the import if this really is normal performance.
Are normal import tasks also slow for you now? Can you share any more details? I can't test myself yet since the iPhoto import is still churning, but it could help troubleshooting with support. I'll let you know if they come back with anything, I'm on hold now.
In my case there was an issue with the hard drive. I haven't tried to
import any more iphoto photos yet, but will try overnight tonight and
report back what I find. I can now import into lightroom onto a different
hard drive so my lightroom is finally functional again. (although my drives
is giving me i/o error on some files, my backup of the drive lets me open
the files without issues, so I'm hoping that my problem has been resolved.
Good luck! Mine literally took over a week and that was my smallest file. I
would go to bed and wake up and it wouldn't have moved but 10% at times! It
was super frustrating.
On Tue, Dec 16, 2014 at 7:48 PM, washertruck <email@example.com>
Yeah, the support guys on the phone didn't know what was up but after confirming that the iPhoto import was not checking for duplicates (at least they thought) I canceled it and restarted my box. I've started a new import, still on my NAS, but this time to a fresh LR Catalog. It seems to be chugging along at a rate I would expect is closer to normal, about 2 photos per second (instead of 40 seconds per photo). I'll have to keep an eye on it to see if it slows down as it progresses. If it does I'd suspect a pretty nasty memory leak somewhere and will report these two forum posts to feedback.photoshop.com.
But hopefully a reboot and importing to a fresh Catalog fixes it for now. And hopefully I'll be able to import one catalog into the other and detect duplicates that way...