A little script of mine on a mounted windows partition refuses to be executed directly (shebang is #!/bin/bash), but interestingly calling it with bash/sh works. The script is simply a collection of grep and sed commands.
The drive is mounted with full rights:
defaults,windows_names,rw,auto,user
Hence, for the the file got
-rwxrwxrwx 1 root root
for the file.
What's going on there?