You just don't get it. If the CDs were merely backups of the hard drive, the backup would transfer all the folders and sub-folders. Did the prosecution ever point out that the only stuff on the CDs was porn? If so, your argument has much more merit, but if not then they could just be backups that would reflect the way he organized his hard drive.
And the computer guy said that these "Attack" files had been deleted, time of attempted deletion uncertain, but that he had been able to recover them. It's not so easy to scrub a computer clean, although DW tried!
That actually cuts both ways -- DW could have just as easily deleted the files out of disgust once he saw what they were. The fact that they were named "attack" doesn't necessarily mean anything, people who post porn online use all sorts of weird titles for file names.
I don't download porn, but lord knows what's on my 'puter cause of those van damned popup windows. I'm thinking I'm gonna get me that there Evidence Eliminator, just to be safe.
Yes, this certainly sounds plausible. Great point!