I'm running an Apple TV 2 with ATV Flash on it. It works well, for what I use it for, otherwise I wouldn't have mentioned it wink

However I'm not using the Plex client, which I imagine has higher hardware requirements. Luckily I have very simple requirements, I just want to be able to point at a bunch of 720p video files on a SMB share and play them, without any fancy bells and whistles.

And yes, jailbreaking is an issue, as it does look like an Apple TV 3 jailbreak might be a long wait.
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Remind me to change my signature to something more interesting someday