aux.* as filename

[Francky Leyn]

Dear,

I have DVD with a file system on. At some place the files aux.c, aux.h 
and aux.pg
are present. If you try to cp, find, tar or whatever, the command "hangs".
I thought: well perhaps those files are corrupt on the DVD. I will try a 
testcase.
I issue touch aux.c at a place on the C:\. What do I get?
touch: closing `aux.c': Bad file descriptor.
Can someone explain me what I encounter here?

Regards,

Francky Leyn