So the universal quick search was annoying me a bit when I wanted to search for specific posts. You can do it under Advanced Search, but was just annoying that you had to do into Advanced Search, and then Search By Content Type. Anyway... long story short, is when you put your cursor in the search box in the navbar, you should get a checkbox that fades in. It allows you to toggle search by threads/posts without going into Advanced Search. If you don't see anything fade in when you put your cursor in it, do a hard reload... you might have an old JavaScript file in your cache. Let me know if anyone finds any problems with it... I'm going to bed for now.
You need to click the search box on FF to see the checkbox, or maybe that's what you meant ? On IE it just shows, not logged in.