Photo Stream uploading copies to PC
I have both an iPad and iPhone 5 using Photo Stream. I have them both connected to iCloud on my Windows 7 PC. Every once in a while photos don't automatically upload to my computer when I take photos on either devices. So what I do is simply sign out and sign back in on iCloud for my PC and I can see it start uploading all the pictures into the Photo Stream folder. But when I do this, it reuploads most, but not all, photos that have already been previously synced to my computer. This is not a major problem, it just becomes annoying when I have to start deleting copies of pictures everytime I do this.
I believe the problem can be fixed if I didn't have to keep on signing in/out every week or so. Anyone have a solution to this?