Hi - I've been using Firefox for 10+ years, and have not touched my add-ons etc for years. I also regularly clear my cache of temp files. That said, searching my (vast) bookmarks in Firefox used to be lickety-split, very fast. Then, it started slowing down, on both PC (Windows 10). Then, a little while later, it started on my laptop (Macbook with latest IoS). It's now gotten so bad that I am searching my emails to find the links I'm looking for, rather than putting my browser into a coma for a time, because it freezes. What is the problem, and how do I overcome it? J