BB File Scout is a GREAT way to improve the overall performance of your Blackberry by freeing up valuable application memory. The more free application memory your device has..the better it will run (too check app memory check my post on upgrading your Storm's OS)
With BB File Scout you can go in and delete a lot of the useless stock wallpaper photo's, unused ring tones, and on the Storm the Babylon AD preview video (that file alone is 10MB)
All in all if you delete all of the useless stuff you can free up around 15-20MB's....Which will allow you to download MORE STUFF!!
Download BB File Manager OTA here
Be Careful to NOT Delete critical files...rule of thumb...If your not sure...DON'T DELETE!!