Sometimes when i click play on a YouTube video, the video is just plain black and i get a HORRIBLE and loud screeching / clicking sound from my speakers. Even at a very low volume it's extremely loud. It's done this for quite a while now. It does it fairly often on the HTML5 beta and with H.264 videos (I use ClickToFlash) I've read on YouTube's forums and it seems to ONLY be people with newer Macs (2006+) From what i've read most have this in common: Snow Leopard Safari 4+ HTML5 -------------- Other things a lot of people had in common were: Flash 10 or 10.1 10.6.2 or 10.6.3 ClickToFlash Does anyone else get this extremely annoying problem? I'm kinda worried it's going to screw up my iMac speakers because it gets SO loud, even with my volume set to 10% or less. Muting my volume for every video is just a really bad way to "fix" this problem, so i'm hoping to figure out WHY it's doing it and HOW to fix it.