I'm not sure why I'm getting extremely slow download speeds in 10.9. I ran a couple speed tests and as of current it appears that my upload speed is faster than download. I have tried resetting NVRAM and SMU and still nothing. I even uninstalled Little Snitch. Last night I was getting decent speeds and then it started slowing down to a crawl. Sigh. I am running on a 2009 17" unibody MacBook Pro. I know there's nothing wrong with my internet because I also ran a speed test from my iPhone, iPad and other computer and it's fine. The problem only appears to be happening on my MBP. I've been trying to pinpoint the problem but really am at a dead end now. I also tried repairing permissions, disk repair, etc. Everything is fine. What would cause such a slow speed when downloading or loading up webpages, etc. This didn't happen when I was in 10.8. In case it matters, I updated to 10.9 over 10.8, not a clean install. If anyone here can help me pinpoint this problem I'd appreciate it.