posted this on September 22, 2011 09:03 AM
You can replace your presentation by following the steps listed below:
• Login to your account • Click on My Uploads from the drop down menu on the top right • Find the file that you wish to replace and click on the Re-upload button under the title of the file • Click on the Choose File button to open an explorer window (Windows) or Finder window (Mac) to select a file and then click the Upload button
The presentation view page should now display the updated version of your presentation. Please note that the process of replacing the file can take up to 15 minutes. Also, see this FAQ about replacing files.
Please note that you can not replace videos, only presentations and documents that you have uploaded to SlideShare.