disk usage problem

I have an odd disk ussage problem that I need some advice about. This morning I notices that one of my disks is full. I have 3 disks on a 10.4.10 Server machine with the boot disk named "disk0". The finder clained that the disk was full, as did the df command: truffula:~ root# df -h Filesystem Size Used Avail Capacity Mounted on /dev/disk0s9 234G 233G 0B 100% / devfs 110K 110K 0B 100% /dev fdesc 1.0K 1.0K 0B 100% /dev 512K 512K 0B 100% /.vol /dev/disk2s6 931G 654G 278G 70% /Volumes/disk2 /dev/disk1s9 234G 125G 108G 54% /Volumes/disk1 automount -nsl [209] 0B 0B 0B 100% /Network automount -fstab [228] 0B 0B 0B 100% /automount/Servers automount -static [228] 0B 0B 0B 100% /automount/static After running du truffula:/Volumes/disk0 root# du -hd 1 16K ./.Trashes 2.0K ./.vol 7.2G ./Applications 1.5K ./automount 3.5M ./bin 16K ./cores 2.0K ./dev 3.2G ./Developer 0B ./Groups 3.8G ./Library 44K ./Network 21M ./opt 5.2G ./private 2.2M ./sbin 1.6M ./Shared Items 1.6G ./System 63M ./Users 16G ./usr 975G ./Volumes 1012G . the thing that jumps out at me is /Volumes sitting at the level of /Volumes/disk0/Volumes. Running ls shows: truffula:/Volumes root# ls .DS_Store HOME disk0 disk1 disk2 which is what I expect and correct, but truffula:/Volumes/disk0/Volumes root# ls .DS_Store HOME disk0 disk1 disk2 makes no sense. It is like there is a second copy the directory "Volumes" at the level of /Volumes/disk0/. However, there should not be room for a second copy of /Volumes there anyway since the entire disk0 is 234 G in size. and according to du -h, the directory Volumes is 975 G. Anyone have an idea as what is going on? Thanks in advance