My mid 2012 iMac died with a catastrophic HDD failure (Trying repair disk on boot up actually led to Disk Utility re-writing the Boot Info and now it fails to boot at all). After trying lots of options, I decided that I had to bite the bullet & get a new iMac. Just received my Oct '15 Refurbished 27" and all well and good until I use Migration Assistant to try to restore from my Time Machine backup on the local network drive (a Time Capsule). There's about 640GB to restore, and it starts out okay, if a little slow (I'm connected over Ethernet) with an estimate of 15 hours approx to complete. After a while, though, it now has an estimate of over 200 hours to complete! I've had to restore from a Time Machine backup before, but it's never taken anywhere near that long. Is this a known bug/issue? are there any workarounds? HELP!!!!