This is why I have not been posting recently, my pc was fatally wounded by a Trojan so had to be reformatted. Even though the nmessage on screen says that the infected file can be deleted, in reality it could not, as it would then shut down the pc and restart, only to show me the same message again and again..... It was a real pain and I am going to be much more careful about virus prtection in future.
Now I have to to get all my programs back the way I like them, which will take a long time!
I was VERY pleased that I had my DROBO to back up my files to, it is so easy to use and well worth the investment. I can keep adding in larger harddrives forever to increase the storage capacity, a very clever thing.