I have not been able to change the USB cable due to the set up, which has a couple of active USB cables running to the aerial which is on my roof. If this is the prob then I'll just have to put up with the minor inconvenience, and remember to reset the USB.
As for the drivers, I may well have old ones installed as I did a reinstall recently from the CD I got with the box last year. I did use the full programme for the 2010 update, but can you please point me to the latest drivers so I can load them just to make sure.
Many thanks, Steve