Music Folder Indexing

I recently performed a clean install of Vista on my laptop. Before doing this I copied my music folder with around 13,000+ files in it to another computer and then copied it back to my laptop after the install. Before whenever I would open the folder it always displayed the files sorted by Date. I've managed to get it to do this one time since the install. Now it will not display the date of each file at all. I'm running Google Desktop Index and hoping that this will help.

Any suggestions or know why this is happening?