I have a desktop(Chuckles) which has 2 external drives connec6ted by ussb ports 2.0. The weekly backup is copied to my W.D. my book 500gig drive with absolutely no problems. This is an old HP Pravillion 600mg memory and 250gig segate internal H.D.
My second machine is an IBM t42 laptop 40 gig hd and running Windows 7 ultimate build 7100. The backup goes to linksys router(wired and wireless) from the router to desktop(chuckles) and to USB port to Seagate external drive 160gig.
Partway through the backup the backup fails. error network connection aborted by the local system(Chuckles) Backup Failedn error code 0x80070404.

I have tried this laptop backup three times. All drives shared and goup name same on both machines.
What is going on? Any suggestions most appreciated
Happyman