When I try to get into my email accounts it says their security certificates are not up-to-date and I should not continue. Has anyone else had this problem or is it just me? Edited yes, it's just me. I changed the battery in the computer because the clock was running slow and the battery had been in there for 5 years untouched. When I put the time and date right I forgot it was no longer 2008. This seems to have the result that the security certificates on the web sites appear to be out of date somehow. Anyhow having put that right everything is OK now. Thanks to anyone who looked at this thread.