Flash 10.2 is out of beta and if I were you, I'd download it right now.
Excerpt:
Source: Engadget
Excerpt:
Its biggest new feature is the Stage Video API, which promises to drastically reduce the processor load of playing back high-res video. It'll need to be enabled by content-providing sites like YouTube, Vimeo and Brightcove -- all of whom are already on the job -- but once that's done, Adobe says 1080p playback will cost you no more than 15 percent of your CPU cycles.
Source: Engadget