tv_grab_pt error 418: I'm a teapot

Since more than one week it's not working:

$ ./tv_grab_pt --config-file test.conf
getting list of channels:
... (ok)
getting listings: could not fetch 
http://nos.pt/_layouts/EPGGetProgramDetails.aspx?c=TVC1&p=86523&h=0&sh=%2001:45%20&eh=%2003:25, 
error: 418 I'm a teapot, aborting

Is nos.pt teasing us?

Rgds
jss

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