Firefox’s most recent update causes pages with mixed content (eg. open, non-secure pages displayed in a secure site such as Laulima) to not display. For example, if you use web content links in your Laulima site, the page may be blank when students click on it.
To overcome this problem, you may either use another browser or change the settings in Firefox. If the “shield” icon in Firefox is available, you might consider turning off that feature for specific Laulima pages. Advanced users may choose to turn off that feature via the about:config page. Please inform your students so they do not panic.
UH ITS support is looking into this problem.