Hi.
The one of the left is the original folder on my external HD, the one on the right is the same copied to Mackintosh HD.
The folder in the Mackintosh HD has started growing in amount of files. But I haven't been doing anything, just open some files with Quick Preview and some retouches with Aperture.
In Snow Leopard, this didn't happen. I'm 100% sure.
What happens here?
The one of the left is the original folder on my external HD, the one on the right is the same copied to Mackintosh HD.

The folder in the Mackintosh HD has started growing in amount of files. But I haven't been doing anything, just open some files with Quick Preview and some retouches with Aperture.
In Snow Leopard, this didn't happen. I'm 100% sure.
What happens here?