Comment 9 for bug 289325

I'm a new user of Ubuntu 9.04 and have suddenly lost ability to view Youtube or ANY video.Worked fine until the updates of a few days ago(about July 22 or 23)(there were several) and now nothing.I went to the Synaptic Package Manager and it shows that flash plugins are enabled.Tried to install Adobe Flash Player again but system won't recognize.Any thoughts on how I can get this feature back or identify and correct the update that caused the problem?Need step by step, as I'm not very proficient.Thanks.John