[BlueOnyx:09423] sec_error_unknown_issuer

[DD]

Hi all,

I've installed a new SSL cert on http://www.tidetimes.org.uk

When browsing HTTPS in Firefox I get the error 'sec_error_unknown_issuer'
which Google suggests is due to not having intermediate certificates
installed. 

https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbartic
leid=1249 states the required cert is the 'AddTrust External CA Root' which
I've installed using the CA Management page in the admin panel, but the
error persists after restarting HTTPD.  The cert actually came with three
others, all of which I have installed.

Does anyone have any better instructions?


DD