Suddenly I am unable to buy anything on my computer. The only thing that has changed recently on my computer is that Norton updated so I can only think that has sth to do with that. Cannot find anything about this problem on forums/web search. I have not wittingly touched my settings. Have tried three different browsers and several websites and it's always the same. I go through the process of purchasing and at some final point, depending on site, nothing happens. E.g. on Amazon I click the final 'buy' button and nothing happens, like the button becomes inactive. On another site, at the last stage I have to 'enter the numbers I see above' (security thing) which I do and the page just keeps reloading with a new number which I enter and it reloads and this goes on and on. Trying to buy tickets from a cinema, I try to put tickets in 'basket' and an error comes up. It's really weird and it's driving me nuts! Does anyone have an idea what's going on here? I am not very tech savvy so I hope it's sth simple.