When I backup my Windows 7 computer, I have 2 partitions to backup. It seems to take 10-15 minutes initialising the backup operation on each partition before starting the write operations. This started with Backup and Restore 10 after using it with no delay for years. I upgraded to Backup and Restore 2013 and the same thing happened. On one occasion it worked without delay after switching my backup drive to the USB lead previously used by my printer, but it subsequently reverted to the long delay. Initially, I thought that the backup had silently crashed, but by accident left it trying only to discover it had started when I came back 1/2 an hour later. All other operations on the backup drive work fine.