I have a Compaq Presario running Windows 7 Ultimate with 2048 EVGA PCI video card and 4 gigs or Ram. The cache is clean on all browsers, but the main browser that I use is Google Chrome updated with the latest version and the only plugin I'm using is the built in version of Shockwave and Java (up-to-date). The connection is wifi-connection shared throughout the house (verizon fios). I am on the third floor, the router has recently been reset on the second floor. I went to load a video on youtube at 6 a.m. in the morning it played fine. Then I went to watch a related video to that video and it played sluggishly. I thought that it may have been the resoultion of the video or the way it was edited. I reloaded it and still the same result. I loaded another video and the audio and video were still out of sync. I have two wireless adaptors. The first one is wireless-g netgear pci card and the antenna is missing usually giving me only 2 bars. The other is USB SMC wireless-g card maximizing my connection from 2 to 5 bars. Recently the connector broke on the usb card and I have to jiggle it and mask it with tape to make it work. Then when I finally get it connected so it's detected I only get five bars with the netgear pci card for 30 seconds and then it goes back to two. I realize I need to buy a new usb card because it's faulty. After watching the videos I went to work and came back at 5:00 o'clock and the videos I preloaded earlier played smoothly and the usb connection SMC wasn't even connected, just the netgear. It seemed like the netgear played the videos smoother by itself. but I tried that in the morning and the videos I wanted to play wouldn't play. Could it be the configuration of Windows, a bad driver? I have anti-virus protection by ZoneAlarm and I heard that disabling the firewall could be the problem. Could it be the location of the router and access point or the traffic through the air waves at different times of the day.My judgement is the service or the router location, which is right underneath me on the second floor. What do you think?