Hi, This is the first time after many years that I address this pennel. Because I am already elderly (85) I use tools, such as 'Zoom reader', Large letters and the 'Darkmode'. I use UBUNTU 24.04.2 LTS with Firefox as a browser and Thunderbird for the mail. My problem now is that my computers and tablet freeze after a few minutes of working on the browser and I have to restart them. With Ubuntu they can't find anything that could be the cause and I was suggested to contact Mozilla. Hopefully you can help me. Kind regards, Peter Batist