The first thing is that you have to do some configuring of both Java and Safari to get the applet to run at all.
Siri knew who those people were but proclaimed 'Uh oh, I don't have a phone number for Jane Isa Doe." and beneath, there's a message: "Content Not Available." I debugged this for over an hour and on a hunch, found a workaround that seems to work for nearly everyone who has tried it.
They say it's not a bug, it's by design here, even though Google's support page says it accepts Safari 4 as a fully supported browser.
If you want Google searches to go back to the modern style, you need to change your User-Agent string.
On two of the Macs, as soon as I fired up the Citrix app, the Java vpn window would show 'error'. Then I remembered that I had done some Java development in the past and installed various jdks from Oracle so I ran: That was on the working Mac.
Then I remembered the difference between 'System' Java, Java plugins, and Java development kits.