My sister has a new Dell pc running Windows XP. She has a problem whereby any website she goes to where she needs to login with a U/Name and password allows her to put in her login details, but when she clicks login she goes straight to page cannot be displayed. This only happens with her or her kids login details. I tried it last night and got into my Yahoo e mail account with no problem. This seems to happen with every site shee needs to login to eg Tesco online, Hotmail, ebay etc. She does not appear to have any viruses. We have tried system resore to go back to when she did not have this login problem but has not resolved it.