Similar to this. https://support.mozilla.org/en-US/questions/1381132#answer-1516771 Next time it happens don't kill it, just wait to see how long it takes to respond. It happens to me and I wait for about 10-15 seconds and then it works again.

@ jonzn ...there have been afew times where it eventually responds, but most of the time it will not respond. Or at least I am not willing to wait 5 or more minutes to see if it will respond. I have to close Firefox to get it to work again. To resolve the issue I have switched to a refurbished Win 10 computer. So far there have been no hangups with this computer. So I think that it was likely an attack on my Win 7 older computer.

Not an attack on Win 7. Just that 102.0 has also been giving me issues on Windows 11 and Linux. Since updating to 102.0.1 the browser has been fine for me on Linux. I have Windows 7 & 11, but Linux is my daily driver so I'll have to go see how it's doing in Windows. I also recommend running a different version of Firefox like Dev, Beta, or Nightly to compare.

https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

I just confirmed that 102.0.1 is still freezing for me in Win 11. Linux and mac appear to be okay.

Device name ZBook-17-G3 Processor Intel(R) Xeon(R) CPU E3-1535M v5 @ 2.90GHz 2.90 GHz Installed RAM 64.0 GB (63.9 GB usable) Edition Windows 11 Pro Insider Preview Version 22H2 Installed on ‎14-‎Jul-‎22 OS build 25158.1000 Experience Windows Feature Experience Pack 1000.25158.1000.0