Drive Bleaching in Norton Utilities

I bleached a drive and afterwards I found 767 files named pgbleach.n (n=1 to 767) in the root of the drive. Is it safe to delete these files?

 

Also, when upgrading to N360 v6 it broke Ghost 15 and had to re-install it. Just an FYI.

 

 

Bob Eyster

 

[Clarified Subject]