Back in 2000, a very similar problem was my first lesson in frame buffers.<p>I was watching some adult material using Quicktime on Windows 98. A few hours later, I wanted to show my mom something on my computer. As it loaded the new video in Quicktime, the last frame of the porno sat there in inverted colours until the new video began to play.<p>I had closed Quicktime hours ago... what was that still doing there in memory?<p>Needless to say it was very awkward.