pxssh submit su commands = very very slow

[gert]

On Jun 29, 1:19 am, Neil Hodgson <nyamatongwe+thun... at gmail.com>
wrote:
> gert:
>
> > This works but after the su command you have to wait like 2 minutes
> > before each command gets executed ?
> >             s.sendline ('su')
> >             s.expect('Password:')
>
>     A common idiom seems to be to omit the start of the expected reply
> since it may not be grabbed quickly enough. Then the prompt has to time
> out. Try
>               s.expect('assword:')
>

I tested, but it has the same result. Each command after the su
command needs 2 minutes before pxssh display's its output.
Could there be a expat loop in pxssh or something ?