Thanks for responses. First the Japanese slide show is a single executable of 691,406KB. There is nothing in properties to tell me anything. When it runs it has the narrative Sample BGM on the bottom right. I have been in touch with the creator and it is software on her parents Sony PC. She will not be back at her parents until after Christmas to check what the actual software is. Back in March I did try to contact McAfee but as I purchase the antivirus through AOL they had no record of me and would not answer questions. However, a CD that I took to my sister took 6 minutes to run and she has AVG. I have done some time tests this morning with McAfee running. To run the slide show from my hard disk, 1st run 42 seconds, 2nd run 9 seconds, 3rd run 20 seconds, 4th run instantly, 5th run instantly. From the CD 1st run 2 minutes, 2nd instantly, 3rd instantly. Reloading the CD 1st run 2 minutes 52 seconds, 2nd run instantly, 3rd 2 minutes 35 seconds, 4th instantly, 5th instantly. Thus is would appear that once McAfee has checked the exe it is happy to let it run again, but every time the CD is put back it checks it all over again. The big question is why does McAfee check the P2E CD but not the Japanese one. I will try to get hold of McAfee again.