Save and Restore - Backup is taking 46 hours!!!!!!!!!

I have been using Save and Restore on my XP desktop for a couple of years.  Its all been on the slow side, usually taking a couple of hours to backup about 160GB.  This time when I started my backup it said 46 hours.  I thought this was wrong so I stopped the backup and tried again.  Same thing.  I ran chkdsk on my desktop and on my external drive that I am backing up to, then tried again.  46 hours.  Any ideas on what is wrong this is way to long!!!

 

Thanks