What is actually happening here is the progress bar says 100%, but the file is still downloading in the background. You may find a file at the end that you can use, or the progress bar may go back to 0% and the download process will start again. I eventually received a \'corrupt file\' message.
A lot of people are experiencing problems downloading and installing the Yahoo Instant Messenger. The download process lets you download the launcher (approx 430kb), which, once clicked, starts off a download of approximately 15mb. The download starts as normal, however, after about 10%, the progress bar tends to jump around a little. The progress bar then hits 100%, but the install process does not launch. You wait for a bit, nothing happens, so you hit \'Cancel\' and try downloading again.