What the heck is wrong with my computer? First of all, I'm not smart. Computers are NOT my thing. I'm totally baffled. Over the past month or two my 2013 iMac 27" has been acting up. The internet is really slow, jumpy, buffering videos and slow downloads. Certain sites have video that won't even load. I've noticed sites with adds within the content (cnn.com, cnet, etc.) take longer to load those ads. I was thinking this might be caused by the os 10.10.3 update, but now I'm not so sure. Here's what I've done: -used CleanMyMac to dump several 100 Gigs of junk off my computer -ran speed tests with 28mb download and 1.8ish upload -I have 24mb RAM, so I don't think that's the problem -ran Kaspersky, made sure it's updated -Activity Control never shows anything very high usage (above 30, unless I'm saving or downloading something) -uninstalled and reinstalled Adobe Flash All applications seem fine, but Photos is not as slick as advertised -facebook is super jumpy -website scroll is very poor -video sites using flash seem buggy or like there's a virus or something -AutoCAD 2013 works "fine" (no related problems, just older problems) -Photoshop and Illustrator work well -Google Chrome + Safari have same issues This feels like a virus, but I don't have any proof. Can anyone help me determine if this is a Yosemite thing or a wifi thing, or a hardware thing, or a system thing, or something totally different? I'm out to sea without a paddle.