The horizontal scrolling issue on low resolutions has been addressed.
Unfortunately IE6 support we won't be re-adding. In the process of this update we actually fixed a lot of IE6 issues, but continuing to support IE6 is something that takes up an inordinate amount of time, and the amount of IE6 users has grown extremely small. We're not going to "turn off" our existing IE6 support, but we're going to stop testing and fixing IE6 issues after this time.
Even if we weren't dropping support for it I'd highly recommend checking out a new browser because modern browsers are much faster with better features and support for better-looking sites.
Google Chrome is the fastest and probably simplest for normal users, while
Firefox is aimed more towards power users who want a variety of addons.