When I am browsing the web on my PC Windows XP SP3) in the morning, I often come across sites that have videos embedded in them. When this occurs, I get a black box with the message, "Must install adobe flash (or latest version, etc). When I try to do this, I get a message that I can only have one version running on this PC at once. I deleted Adobe Shockwave flash from my PC and tried to reinstall the latest version of Adobe Flash, but got the same message. Any fixes?