Any time i run Netflix, my CPU jumps up to 150% +- 20%. Needless to say, this pretty much brings everything on my computer to a halt. I seriously need help with this problem! This has been going on for like a year now. I have spent countless hours pouring through help topics and various forums' discussions trying to diy this but i have yet to find anyone talking of a similar problem. (Although to be fair, this may be due to poor research skills, but i have still spent way too much effing time trying to fix this.) Here are a cavalcade of fun facts that may or may not be relevant: This has not always been a problem. I had a good year+ of trouble-free netflix viewing on both Firefox & Safari. The problem started about a year ago with Firefox, then a few months later with Safari. Until 3-ish months ago only Netflix had the problem, but now other online videos do too (but netflix is still the worst). Just being on the netflix site, without Instant Watch open, makes the cpu usage jump to about 90% and it is _super_super_ slow. Any action i take is followed by a good 20+ seconds of thinking and maybe the Mac spinny wheel thing as the browser temporarily freezes up. If i quit every other program and _only_ have netflix running, then i can watch it with minimal jumping, but only then. The cpu usage is still in the triple digits, though. Since then, i've uninstalled + re-installed Firefox, Safari, & Silverlight. I also installed a new OS. I got rid of most of my plugins and extentions in both browsers except for NoScript and Flashblock (and maybe evernote). I try to keep my cache, history, and cookies clear. I have done a bunch of other stuff, too, but unfortunately i have forgotten what a lot of it is since this stupid problem has been going on for so long. This unfortunately also includes a couple of crucial names in my netflix customer service interaction. :\ During its 1st year of life, it spent 5 months getting fixed by apple (hard drive replaced, logic board replaced, some other thing replaced (the i/o board?)). Also, the battery broke right away. Since then, though, it has not had any 'major internal issues' that i can recall. i have heroically avoided throwing my computer off a cliff in frustration. I called Netflix Customer(Technical?) Service and they had never heard of this problem and didn't really know what to do about it (they did still try to help). The guy suggested one thing, which helped a bit, but he said that that was probably not the real problem though and that it sounded like ______ (a processor or player?) might be running twice or trying to run twice or something but he didnt know what to do about it. Whatever ______ was, it was not silverlight or a plugin or something easy like that. I really wish i could remember what it was and if i do find where i wrote the name down i'll update this. If you have any solutions/ideas/suggestions/questions, please let me know!