Sorry, I should have said. I am using Windows Vista - I would use a Mac but cannot afford one in the UK!!

I too cannot see why my Anti Virus software would affect updating the software on my touch - I have checked and allowed all access to itunes, etc. - but they said at the Apple store today that it can - their words were "there are issues with certain Anti Virus programs" If that is the case why are we not alerted by Apple? Could have saved me the equivalent of $150 in having to travel to my nearest Apple store!!!