Hi All,
This appears to have sorted itself out . I emptied the bin and the suction appears to have improved and the motor squeak has stopped so I'm wondering that maybe, having the bin completely full up to the top was causing the motor extra strain? Who knows. My old DC05 makes a strange noise on shutdown when have been pushing the tool against a fabric.
Anyway, I have used the machine twice since and that 'sqeaking' from the motor on start up and shutdown has not happened on the two occasions the machine has been used.
I hope things stay this way.