To the guys who experienced better performance after uninstalling adblocking, did you try to reboot first? Or, to rephrase, how quickly after booting did you experience problems? The reason I am asking is that I read what they said about the PR1.2 delay / microb problem where a process used to crash and restart, but now instead will keep running for days, nibbling memory and slowing down. You specifically said that you killed the browser/browserd processes, that would trigger a faster browser when experiencing the slowdown problem. Regardless of uninstalling anything.