its a good news/bad news story. Yes they've doubled the speed, however if you are a long way from the exchange, the connection will not be able to cope with the increased speed and the internet connection will drop off.

I've had little or no internet connection for the last 2 weeks (since they generously upgraded the speed!!!!)

I went from base speed of 2 meg (doubled became 4 meg) and have now had to decrease the original speed to 1 meg (doubling now makes it 2 meg), and it works again.

If you're having issues talk to Qtel.