Had my T300 wheel since the start of the year and used it for about 6 evening sessions in that time. Last night it couldn't calibrate and just kept spinning to the right and hitting the stop without spinning back all the way to the left. I unplugged it and turned it all the way to the left then plugged it back in and it then calibrated properly when it restarted.
When I went into Project Cars (the only game I use it for) the FFB on the Caterham felt light and there was a slight floating sensation at the centre point. So I quit and set the FFB on the wheel to 100% from my usual 67% which improved things a lot. I then tried out the Bentley 8 and the FFB was mega heavy so I turned it back down to 67% and all was fine again for the rest of the session including a 10 lap BMW TC race at the Nordschleife. Went back to the Caterham and realised that it was actually the car that was the problem and the FFB for it is very light.
I'm not voting 'yes' yet as I think that would be a little unfair. But if it plays up again I'll need to work out a way of updating the firmware as I don't have any PCs in the house... and then I'll give my vote.