System disabled/SBS gone awry. Pls help!

[epoch1970]

You'll have to do this as root, then.
1) "sudo find / -xdev -name *desktop.ful"
Will look for files named something-desktop.ful (got that pattern from your original post) and print when it finds a location. Find will search the whole drive, give it time.
2) For each line that was printed, run "sudo rm -rf <full path>"
Make sure the path is correct and absolute, that is starting with / and containing no space or funny characters like '*' or '/' !
- #rm -rf /tmp/foo/desktop.ful (a subdir in /tmp --ok)
- #rm -rf tmp/foo/desktop.ful (a subdir named tmp in the current location --oops ?)
- #rm -rf /tmp/some dir/desktop.ful (2 deletion commands: i. subdir "some" in /tmp and ii. directory "dir" in the current location --doh!)

Under the shell you escape funny chars with a backslash most of the time. like in "some\ dir".

To avoid tragic mistakes, you can take some or all of these precautions:
a) use "ls" instead of "rm -rf" to test the path. If it says "no such file or directory" you got the path wrong
b) Use the terminal window and the graphical file navigator window; In the terminal start a line with "sudo rm -rf " (the final space is important. Don't type return now). Now click through to each location indicated by find and drag and drop the "desktop.ful" folder in the terminal window. This will print the absolute path with all escapes needed. Now press return, and it should work.
c) Use "rm -rfi " which asks before deleting each file.
d) Protect your music library (and other valuable data) before deleting stuff. "sudo chattr -R +i /path/to/music" will make all files immutable. Like on a CD-Rom. Even root can't delete them. So once the deed is done you'll need to run "sudo chattr -R -i /path/to/music" to reinstate normal use.

Have fun.