Images Not Uploading in Order

I’m having trouble with the Media Manager for WordPress 3.5. Every time I upload images onto a page, the images always get uploaded out of order.

For example, my files are named Cleveland_1, Cleveland_2, Cleveland_3, Cleveland_4, Cleveland_5, and when they are uploaded into WordPress, the Media Manager changes the order where it displays 4 & 5 first, then 1-3.

I can drag and drop to rearrange, but this is a pain when you’re dealing with large image galleries.

Any ideas what could be causing the problem? Thanks for the help in advance!