Flash video is terrible, it still gives me issues as well occasionally. I long for the day we do away with it completely and embed the video directly into the html like we do with images:
http://en.wikipedia.org/wiki/HTML5_videoAs for your problem, I'm not sure about Chrome but I've had similar issues in the past with Firefox that went away when I updated the Flash plugin to the newest version. You can check which version you're using here (+ links to updates):
http://www.mozilla.org/en-US/plugincheck/Huh. I suggest clearing your browser's memory, if you haven't done that yet.
Oh, how can I do that? And would it make it forget some useful or important things as well?
For Firefox, the keyboard shortcut to clear the web history is Ctrl+Shift+Del