The connection to this site uses an obsolete protocol (TLS 1.0), a strong key exchange (ECDHE_RSA with P-256), and an obsolete cipher (AES_256_CBC with HMAC-SHA1).
Yes, I have got that message in Chrome for a while. I think the older ( AES_256_CBC with HMAC-SHA1) encryption has been exploited elsewhere so they are just warning us.
I guess it may be fixed if the forum software is updated but I can imagine that could be a testing time...
If it's a 3rd party cert can't you just get a SHA-2 version reissued ? Rapidssl did that for free when I had to update all of our websites last year to move off SHA-1
I use chrome and have been bugged with this issue. I deleted all history/cookies and it seems to have sorted it... unless Alpha1 has fixed something, server side?
This worked for me, but I had to continue past the 'unsafe' message in order to log in. Once logged back in all seems well - although it does state 'Not Secure' in the address bar when within the private messenger environment (it used to do that even before the update though).