Ghost 15 slow - taking 50 minutes for system imaging on Windows 7

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1

On a 90Gb internal Sata drive, my Windows 7 (Core2 Quad) system uses 60Gb.  Imaging to a second internal eSata Drive takes 50 minutes.  (20 minutes just "calculating time...")

 

My friend with a similar system takes 10 minutes.

 

Any suggestions?