I upgraded from Lion to Mountain Lion this afternoon, and am really liking the changes so far. However, I noticed that when I click on a site from my Top Sites page, the webpage stutters noticeably when Safari "zooms in" to go to the website, and it also stutters when Safari "zooms out" to go back to Top Sites. This animation was very smooth in Lion, and I'm wondering if this is somehow new/different and normal in Mountain Lion, or if it is some performance issue. Is anyone else experiencing something similar to this? My CPU is a MacBook Pro 2.2 i7 from last year, so I find it difficult to believe that this task would slow it down, but I suppose anything's possible.. Thanks.