My daughter as just been sorting out several years of photos all on cds so that she could put them on a USB hard drive, when she placed one lot on my pictures to sort out the rubbish ones from the good she found that on deleting photos her PC would replace this pic with several more, does anyone know of a virus that could multiply in this way, you start of with one hundred and end up with several hundred, perhaps there is a special anti virus programe i could find, i should say that she is not on the internet at all never as been so she must have picked this up from my PC some time ago when writing CDs, i have not had this problem myself, thanks ; alan