topic Latest Firefox version seems to use up a lot of computing capacity in Discussions https://connect.mozilla.org/t5/discussions/latest-firefox-version-seems-to-use-up-a-lot-of-computing/m-p/119048#M46588 <P>Hi, I updated to the latest Firefox version 148 today and since then my MacBook's ventilator is getting loud within a minute or so after starting Firefox, even without having loaded a website. Firefox seems to use a lot of processing power - looks as if there's something wrong with it. I run it on MacOS Monterey version 12.7.6</P> Sun, 01 Mar 2026 12:11:48 GMT FredBln 2026-03-01T12:11:48Z Latest Firefox version seems to use up a lot of computing capacity https://connect.mozilla.org/t5/discussions/latest-firefox-version-seems-to-use-up-a-lot-of-computing/m-p/119048#M46588 <P>Hi, I updated to the latest Firefox version 148 today and since then my MacBook's ventilator is getting loud within a minute or so after starting Firefox, even without having loaded a website. Firefox seems to use a lot of processing power - looks as if there's something wrong with it. I run it on MacOS Monterey version 12.7.6</P> Sun, 01 Mar 2026 12:11:48 GMT https://connect.mozilla.org/t5/discussions/latest-firefox-version-seems-to-use-up-a-lot-of-computing/m-p/119048#M46588 FredBln 2026-03-01T12:11:48Z Re: Latest Firefox version seems to use up a lot of computing capacity https://connect.mozilla.org/t5/discussions/latest-firefox-version-seems-to-use-up-a-lot-of-computing/m-p/119049#M46589 <P>Doesn't happen when I use the Safari browser</P> Sun, 01 Mar 2026 12:40:40 GMT https://connect.mozilla.org/t5/discussions/latest-firefox-version-seems-to-use-up-a-lot-of-computing/m-p/119049#M46589 FredBln 2026-03-01T12:40:40Z