I'm having no problems. One thing I dislike is that the game store pages automatically start playing video. A minor nuisance, but otherwise the client feels snappier and looks much, much better. Glad they got rid of IE and went with webkit. I'm guessing that they're possibly making a client for OS X... maybe that might actually help revive the mac gaming scene- not that I'd ever buy a mac, but it's good that Valve may be reaching out to other platforms.