f/w/i/w--
got a MacBook Pro 8,2 off eBay with crucial M4 500 GB SSD and it would also prolong ``less than a minute'' to forever, running Migration Assistant in Mavericks
tried using Time Machine, wired Ethernet, and Firewire: no joy
also tried just putting old Mac in Firewire target mode and booting up the Recovery installation and just ditto(1)-ing /Users directories from the old machine and it would also hang the Terminal.app with the spinning color wheel of death (and couldn't force-quit it or anything)
finally (after getting some seriously scary grub commands off the net to write into some IO registers to keep the display from going blank) booted up Ubuntu and ran badblocks on the MBP's SSD and had that error out about the time some messages appeared in syslog that seemed to implicate power management problems with the SATA link
so downloaded a firmware update from Crucial, burned it to a CD-RW (having failed utterly to figure out how to convert the isolinux .iso file to something the MBP would boot off USB), crossed my fingers, and booted and told that, ``yes'', and was surprised to see it report success, updating the firmware (from 000F to 070H)
reinstalled Mavericks (since the firmware update wipes the disk) and, upon reboot, tried using Migration Assistant via Fireware again and it worked. (i let it run overnight so i don't know how long it cut down the ``less than a minute'' to)
awesome
some diags would sure have helped out though. or even just being able to run something like Linux' badblocks(8) and having a logfile to tail -f in another Terminal window to catch any kernel diags while booted up to the Recovery installation