Every time I reboot, Safari has reverted to my default browser, despite setting Firefox as default (both with Firefox and Safari) in my previous session. What else can I try?
Following the instructions here only work temporarily: How to make Firefox the default browser ... If you have more than one web browser, Windows ... article will show you how to make Firefox your default browser.
Setting Firefox as the default browser does not work ... browser is described in the How to make Firefox the default browser article. Most external programs ... , click Set this program as default . Internet tab under Web Browser , choose Firefox in the drop-down.
OCCASIONALLY I can hear my laptop fan whirring excessively when using the web. If it happened too much, I've quit the browser and the laptop soon cools off. This started when using Safari, and was why I thought I'd try Firefox for a while. Apart from the default browser issue, I've found Firefox easier to use and more reliable. I can't say for sure that this 'overheat' issue has never happened with Firefox since I installed it.