Check that the default view settings aren't set to arrange by name and remove the .DS_Store from the folder. I generally use 01,02,03 though. Because I just don't logically trust things like meta data tracking for file ordering.
Since this is obviously a very serious problem for you which is in need of immediate resolution (since you are aggressively bumping):
Just prefix the folder names with a number like Hansr suggested, and everything will sort fine by name. Crisis averted.
But what if I do not want to arrange them by "name".. any other better methods?