Terminating pgAdmin does not terminate backup and restore process

["Andrus" <eetasoft(at)online(dot)ee>]

To reproduce:

1. Start pgAdmin backup or restore command.

2. Close pgAdmin windows by pressing cross in upper right corner and 
selecting "End program"

Observed:

Backup / restore process still continues running without any user interface 
causing internet access

Expected:

Terminating pgadmin should terminate pg_dump and pg_restore also

Platform:  1.4.1 on XP

Andrus.