Had a few years that I had to go PC-free but I'm back on the map.
Also, I can't remember the p-word for iRooster so I decided to give up trying and make a new username
When clicking the Firefox icon (I usually use Chromium so I don't know when this problem started) I get the following error
Your Firefox profile cannot be loaded. It may be missing or inaccessible.
So I tried running it in a terminal
mirknight@U410:~$ firefox Error: Access was denied while trying to open files in your profile directory.
sudo firefox works fine but I'd prefer to not use root for a browser as I can imagine some serious security risks