Ok, so far the new adblocker seems to be working OK. However, the number of ads killed on the yahoo mail page is currently at 648 and still increasing, and that's from when I first logged on 6 hours ago. It seems ridiculously high. Task manager currently shows ~700MB of memory used (again from when I first logged on 6 hours ago) whcih still seems high, even if it's not 1GB+.
With that said, I'm not getting the freezing problems at least, but the number of ads and the memory used is still concerning.