Can you explain with more details what you mean with: ''Only one persona will display'' Is that saving a persona in the Add-ons manager?<br /> Firefox can only show one persona at the time. ---- Make sure that you do not run Firefox in (permanent) Private Browsing mode. *https://support.mozilla.org/kb/Private+Browsing *Tools > Options > Privacy > Firefox will: "Use custom settings for history" *Deselect: [ ] "Always use private browsing mode" Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance). *Do NOT click the Reset button on the Safe Mode start window or otherwise make changes. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes