For the second update in a row, Firefox has caused issues with two of the web sites I use most frequently. The first is Fidelity.com. If it will load at all, it takes a near eternity to do so. The second is the web site for my medicare insurance plan - it causes me to be locked out of my on-line account. These issues first occurred on the second to last update when both of these problems first appeared. I almost chalked it up to coincidence. But now that it has happened again (and only those two web sites) with the latest update I installed (ver. 109.1), I know that it is a problem with Firefox. I have enjoyed the privacy and reliability of Firefox for years. But if updates are going to eliminate my access to my most used web sites, then I'll have to find another browser.