This is the second time this season that we see massive problems with the refuelling rig when it is hot.
Rubens rig failed to work and left him stranded on the track in a dangerous position.
Massa had a catastrophic failure which turned lucky in the end because there could have been a massive fire in the pits when he left with the fuel hose trailing.
Coulthard had the same problem with the rig but managed to realize after 3 m that the rig wasn't detached and stopped again.
It is time that the FIA takes Intertechnique to court over this or decide to finsh with refuelling.