System freezes during backup

Any thoughts as to why I'm having this problem.  An older backup computer using a AMD Athlon @2.13 w/1 gig (max) ram used for iTunes. Everything is paired down to minimal processes running including automatic background jobs. Oops, running 360 Prem  4.1.0.32.

 

Again, during backup the system freezes. I have to hard boot to get the system running again. Perhaps this is a coincidence  , but it always freezes backing up music files. This backup problem did not occur til I installed 4.0 on top of 3.0.

 

Any thoughts? 

 

Thanks,

 

TWS