A bit of background, I have been working on systems since the Commodore Vic 20, so I'm not 'new' or would typically be helpless as many are if they have system problems. Over the last week I decided to format my Mac and re-install the operating system. I have a lot of graphics design that I will be doing for an unknown period of time. I have over the years collected many free fonts and I started installing them about 5 days ago. I don't believe my installing fonts wouldf have affected anything within Firefox, but Firefox is the only browser that I'm having this problem with. I checked Safari and google displays everything as it should as well; my graphics deisgn software forums are displaying fine. I have not used google for anything during the period that I was installing the fonts, so I don't know exactly when this started but yesterday I discovered it. I tried going to the menu on the top right hand corner -> Help -> More Troubleshooting Info -> Refresh Firefox. I then went into MacCleaner Pro -> Clear Cache and Clear Purgable Data. Then restarted the machine. No change. I then saved my passwords and bookmarks, then uninstalled Firefox using MacCleaner Pro and then went to Remove Remaining files. Downloaded a new copy of Firefox and the problem still exists. I tried changing the theme to others. Went to Settings -> General -> Language and Appearance. Set theme to dark, then back to automatic. Changed the main font from (Default) Times to Times New Roman and back to (Default Times) ... but still this problem exists... Help... Please and thank you.