Was working great, but now it takes LITERALLY ONE HOUR for me to switch tabs, or to open anything. Firefox posts a notice saying that a "long running script from AdGuard is preventing this page from displaying." I turn off AdGuard and INSTANTLY the page displays. I have left for an hour and came back and the page was still NOT loaded, and this is happening 100% of the time. No more AdGuard for me... (I gave them MONTHS to straighten this out... I shouldn't have given it a second thought and removed it on the first glitch...)