When I try to steam video from websites like Netflix and Hulu, the audio and video get extremely "choppy" and delayed to the point where it's completely unwatchable. I have already spent hours on various websites and forums researching this and I've concluded that it's definitely a wide-spread problem with OS X Mavericks (not just unique to me). The only two viable solutions I have come across so far are: (1.) Wiping your HD and installing an older version of OS Lion, or (2.) buying more RAM. Option #1 is not acceptable to me (and Apple should be embarrassed by this "fix" being recommended out there). Option #2 is obviously not desireable (I don't feel like shelling out $200 thanks soley to Apple's new OS update), plus I'm not 100% convinved yet that this is even the problem or the solution yet. I only have 4 GB of RAM, but when I'm having these problems I still have at least a couple hundred GBs of free RAM available. I would think this is enough to stream HD video, no? Also, it's not a Silverlight problem, and this is not a browser problem, as some have suggested. I have followed the instructions for re-installing the latest Silverlight plug-in, and I have also tried 3 different browsers (Chrome, Safari, and Firefox), yet nothing has helped. I have also spent several hours with Apple Support online and after several attempted fixes (including re-installing OS X 9.7.3 of Mavericks), nothing worked and the Apple support person said it's a Netflix problem --- and this is despite the fact that I'm having the same problem with other HD video websites, like Hulu and Amazon Prime. Has anyone figured out a fix for this yet??? P.S. Installing OS X Mavericks was easily the worst computer-related decision I have ever made since being a Mac user.