A lot of people commented that tabbed browsing seems faster with 10.3.4 and it seems that way to me also; I was wondering if anyone else noticed these two problems becoming *worse* with the update to 10.3.4: 1) Safari automatically switching tabs based on load completion. Like you click a link in one tab, and while its loading, you click on another tab to do something else. But Safari seems to much more often switch back to the first tab automatically when its close to finished loading. This is annoying because if you click on a bookmark bar link, and then the tab changes, it will overwrite the wrong tab with the new page! Sounds like it would be quite a coincidence, but it happens surprisingly often. 2) I've also noticed pop-up blocker doesn't seem quite as effective. It used to pretty much never allow pop-ups that were unwanted, and now all of a sudden on sites I used to visit before the upgrade, it is passing one of the pop-up ads. Anyone else noticed either of these? Is there some prefs setting that's new that I need to update?