For what it may be worth informationally, I did get another another warning prompt with this the only site and browser I've knowingly got open and running.
Microsoft Internet Explorer variety even though I'm using another browser (just an overlay???)
An ActiveX control on this page is not safe.
Your current security settings prohibit running unsafe controls on this page.
As a result, this page may not display as intended.
Just to note:
I've made no changes to this machine in ages. And have no other browser or pages open. No other programs running except the usual resource sucking leeches.
It isn't crimping my style or ability to navigate. Everything appears as I'd expect it would aside from the warning prompt.
I won't be mentioning it again. Just letting you know in case it mattered on your end.