Wot ?

[#1]

Clicked on my bookmark for my Flickr page,... (been there for years )... and got this....

Quote

This Connection is Untrusted You have asked Firefox to connect securely to www.flickr.com, but we can't confirm that your connection is secure. Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do? If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.

So, guys,   what would you do,....    ? ? ?     .. bearing in mind the last line....  

p.s..    get the same with Pale Moon.....
With Internet explorer......
Can`t find the page..... ( google search page)... diagnose connection..... cannot find the host https://www.google.co.uk using DNS

[#2]

Very strange.... used a bookmark to bring up another one of my flickr photostreams... and it worked.... then went to the original ( after closing the second one ) .. and it works O.K...
Weird  ... ! 

[#3]

Check the time and date on your PC.
When you have a wrong date, HTTPS connections tend to fail with the security warning. Often people have the automatic internet time update turned on which sorts this after a few minutes of bootup so the problem vanishes.
A dying CMOS battery will cause this behaviour,

[#4]

09:44 10 January 2015
Of course,...... that has changed since I tried earlier, and time marches on 

[#5]

Sounds like you have a dirty disk contact. Disconnect your PC from the mains and stand holding it under a hot shower for 10 minutes, try not to get shampoo in your eyes or on the keyboard. Shake the PC dry then switch on. You'd be unlikely to see a repeat of the Untrusted connection issue.

[#6]

@AlaricAdair..... hmm .... must stay off them porn sites late at night ! .