I ordered the W520, after about a week I noticed that during watching video or just streaming audio, I would get a random static/buzz during the audio listening. I checked my external speaker & headphones, I checked all the USB ports that I was using, I removed the battery, replaced the hard drive, removed ram, NO luck. The random static buzz still kept happening. I finally got Lenovo to take the machine back, and I ordered a new W520. Well, the static audio buzz is still happening. Is it just me, or could this be a streaming issue, perhaps bad speakers, but is it possible that two W520's could have the same problems? It's not that annoying, but I paid over $1400 for the machine, so I do have expectations in getting a fully working machine.