I recently purchased an NSLU2 and when it works, I like it. However, I am having a very difficult time copying files/folders to the drive. I will start to copy a folder with several gigabytes worth of data. The copy will start with no problem and then after seeral minutes I get the following error message. "unable to create or replace 'folder name'. The request could not be performed because of an I/O device error." Any idea as to the cause and/or a cure.