The two main problems that I've run into with Safari are: 1. The posting toolbar (links, images, bold, italic, etc.) doesn't appear in the post composition page. 2. The browser crashes whenever I deal with one of those confirmation pop-up windows ("Yes, I want to make this person my friend." or "Are you sure you want to logout?"). These are mere annoyances, and I like Safari way too much to switch over to Firefox.