Bought a new iMac yesterday. When i fired it it up the new Mac offered Migration Assistant. And so I did follow the prompts and got the migration started. I was using the wifi connection to do this. This morning I found that after 18 hours the time is still at 29 hours and and the progress bar has not moved. When I looked at it last night the time was 29 hours so no difference. I am considering shutting down both Macs.