Problem with mounting

I've been trying to follow this great tutorial but I have problem.

I can mount my network drive just fine with:

sudo mount -t cifs //netbiosname/sharename /media/sharename -o username=winusername,password=winpassword,iocharse t=utf8,file_mode=0777,dir_mode=0777

But when I follow the rest of the instructions I get the Mount error 13. If you are seeing "mount error 13 = Permission denied" when running sudo mount -a.

I tried the Fix for Hardy users, but it won't work here - I am running lucid.

Any help would be great!