Certificate help! What should I do?

[SF_Writer]

It usually means a problem at the website, but check your computer clock -- if it's too far off, it can give you that error.

Note that if you absolutely sure you're on the right site, you can still go to it. That does not affect the security of the data. All the notice means is that the certificate is flawed in some way, so it's theoretically possible that the site is faked. Data traveling to and from the site is still secure.