Unfortunately Housecall does take a long time, particularly when most people these days have large hard-drives.
>> I then read about the DNS charger virus
Theres a very simple check for that just go here and it will tell you if you are ok or not
http://www.dns-ok.us/Theres several reasons why you could get security certificate errors, the worst being the one asbo mentioned, but there are a few more things that could cause it.. such as the time and date on your PC being wrong, but its highly unlikely that both pc and lappy date would be wrong. I tend to come across it sometimes on gaming site which display 3rd party adverts. I would be very worried however if it happened at my bank website.
.... and talking of bank websites.. do you have any other protection installed other than your antivirus and firewall. Such as trusteer rapport which many banks offer for free. I believe that this sometimes causes conflicts and false reports, which is why Ive never used it, despite my bank trying to push it under my nose each time I log on.
>>> "do you want to receive only secure items from this site" (or words to that effect) so I click yes.
okay.... theres a reason for the above, which has just made me think of something else. the reason you get the above message is because you are getting http content from a http
s web page. This can etiher be a site misconfiguration or you are assessing https when it should be http.
When you go to orange and tesco are you using bookmarks? What happens if you type
www.tesco.com into your browser, making sure there is no https in front of it.
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Asbo posted one min before me, whilst I was typing out all the above, so Im going to leave it as is