Macbook and Deleting from External Drive problem

I have an external hard drive with three partitions formatted as FAT32, and I have a problem with one of the drives. For some reason, it won't let me delete files that are on this partition. It gives me the error message:
Sorry, the operation could not be completed because an unexpected error occurred
(Error code -1407).

What does this mean?

in finder can you do a "get info" and see if it is locked or that you are the owner of the problem drive?

Hello, i'm currently experiencing this as well. Any thoughts?
thanks
k