Thanks for your reply there. I had a read through those links and tried a few of the suggestions, but none have worked for me. I tried uninstalling my Nvidia Graphics card drivers, then reinstalling but no luck. I've tried numerous times completely removing Java and then re-installing, even tried installing the old 1.4.2 Runtime as suggested on one of those pages, but nothing works. Why should it just 'break'? I changed nothing and there is seemingly no solution.

Cheers