I have installed cygwin, hadoop and pig in windows. The configuration seems ok, as I can run pig scripts in batch and embedded mode.

When I try to run pig in grunt mode, something strange happens. Let me explain.
I try to run a simple command like 

```
grunt> A = load 'passwd' using PigStorage(':'); 

```

When I press Enter, nothing happens. The cursor goes to the next line and the `grunt>` prompt does not appear at all anymore. It seems as I am typing in a text editor.

Has anything similar ever happened to you? Do you have any idea how can I solve this?