I was amazed at this review. It made Boxee sound like a viable product. I own a Boxee. It's sitting next to my TV, and next to the Apple TV I bought once I realized how truly useless Boxee is. I kept Boxee, because it DOES have potential. I hope that they allow caching after some update. Unlike you, while my Apple TV plays perfectly I am unable to watch anything on Boxee without constant stutter and long-term stops. I found the lack of content in Boxee + apps mind-numbing. And with the ugly and awkward UI, it was just all-around disappointing.
I waited for Boxee for months. I bought it as soon as it was promised as vaporware. I had such high hopes. I'm sorry that the reviews I'm reading don't accurately point out it's serious and abundant flaws.