Hi,
While trying to convert my C: drive from FAT32 to NTFS under Windows XP, I kept getting the error on one directory that there was not enough disk space for conversion (I had 100 GB free). On further analysis, I figured out that it was the usual Windows philosophy of providing a random error when they did not know what the problem was and that the real issue was that the directory had invalid entries (including multiple files with the same name).
I decided that I should try and delete this directory, but windows didn't allowed me to do that
After a few days of searches I finally found PATH TOO LONG tool which saved me lot of time and efforts