When I tried to log on to amazon.com's site with my password I got this
message

"unable to establish a secure connection. There is a problem with the
security certificate from that site. (The identity certificate is not
yet valid.)   . . . continue loading?"

I have seen this message a couple of times with other secure sites.

The only unusual thing that has happened recently and before this
message:
I was looking at some cool contemporary Japanese illustration and
design. I downloaded nothing. Later, when I was ready to quit the
computer I saw my trash basket had stuff in it. I opened it. It
contained all the illustrations I had looked at. I figured they
automatically downloaded themselves into my trash, and I hit delete.
They were all locked. I went to my Mac manual and laboriously trashed
each one. It seemed to work.
The next time I went on the computer and tried to go to a secure site I
received the above message about certificates.

Will I never be able to buy from amazon again?   ...unless I reinstall
system 0X and go through all the upgrades? Help.

Thanks, Joan