On iphone 4s there are doubles of my pictures?

I have a folder on my laptop with my pictures in - i have chosen that folder to put on my phone but when i go into my pictures on my phone there's 3 of the same picture - when there's only one version in my folder n my laptop

i have these things and it still hasn't worked:

restore iphone
rename folder
take the pictures off and then put them back on
saved all the pictures in one format (JPEG)

what can i do to get rid of these doubles?

Also in which way are the photos ordered on the iphone eg. The date they were taken and can you change this?

Delete the iPod Photo Cache & try again & see if it helps. Should be either in the folder itself or in the folder that contains the folder you are using.