Ubuntu :: Pdflatex File Not Found On Samba Share

I am trying to compile a LaTeX document using pdflatex on a CIFS/SAMBA network share.

The file compiles fine on the local drive.

Then if I copy it on to the network share and run pdflatex foo.tex I get:

Code:
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian)
entering extended mode
! I can't find file `foo.tex'.
<*> foo.tex

I can view the file with less, so it's not permissions.

My fstab mounts the drive as:

Code:
//someserver/dir /mnt/mountpoint cifs user,username=****,rw 0 0