Kristina Hart emailed the site admin last night to report continuing problems with loging into this site.
After some experimentation we have noticed that you still require to have the following entries in your trusted sites zone (IE only)...
*.hrmsaces.com
*.hrmsaces.co.uk

Am am now taking this issue up with the bulletin board software providers as I was led to believe that these issues should have been resolved with the last security patches.
I'll report back further findings.

Apologies for the continuing inconvenience.