I'm new to ubuntu but I think I did everything right. Adobe flash says its installed and I've uploaded the latest Firefox and Chromium. When I go to youtube all I see is a black screen where the video should be and no image, Same in chromium, but at least chromium says it can't load plugin. Have tried various fixes on this web site but to no avail. Have to be doing something wrong or missing some step while quietly going crazy. Can someone please help me?