Hello folks, I've been away for a while. I'm sure you've missed me. Four months into owning a 2.53GHz/4GB RAM Mini, and all is well. But there's one thing over which I feel slightly cheated; not cheated by Apple, but by the online Mac community. When deciding on the Mini, one of the things that took my attention was the swell of posts telling me, "and the Mac Mini's an awesome 1080p HTPC, too...!". Either I'm doing something wrong, or that's a load of bulls**t. I'm a Beta-tester for the Popcorn Hour C-200 media streamer, and sometimes the latest Beta crocks my machine and I can't use it. This happened to me two weeks ago, and I decided to switch to using the Mini as my media device until the C-200's firmware got fixed. I tried to play a 1080p .MKV of The Men Who Stare at Goats (not exactly Avatar...), and the playback was completely unwatchable. Stuttering, smearing, audio-dropout... useless garbage. And yes, the .MKV itself is fine. I followed an online guide to download Plex, which I understand is a modification of XBMC. The guide (two of them, actually) said that Plex could run 1080p .MKVs... so, what gives? Have I been lied to, or have I missed something? Thanks in advance, DH.