After upgrading my Mac to Sonoma, Firefox quit working. It gets stuck on checking for updates. I have searched the web for answers and I have: Changed my proxy settings - made no difference Opened in trouble shooting mode - no difference Deleted all cache etc - no difference Re-installed Firefox - no difference Set up a new profile (multiple times) - no difference Reset Firefox (multiple times) - no difference Ran a check for Malware - none found A few other things - no difference Firefox has been my main browser for about 15 years and it is now useless. Please let me know if there is a fix. I hate using Safari but I have spent days on this. thanks