Most probably you are using Themes/Templates/Layout to enhance your presentations. Also the integrated online templates that are freely available provide an easy way to churn out visually stunning presentations.
The availability of such large number of free templates directly integrated into the UI makes it very easy to use too.
The problem I usually face when I use some of these themes is with the theme name that appears in the lower left comer of the status bar.
This can become a major problem if you use multiple themes in a single presentation (which I do quite often) and also if you need to distribute the PPT to end customers. Say you have found a nice template called “Rebuilding Singapore” (which is an actual template available in the Architecture folder, but you want to use this to do a sales presentation around construction in the US, you don’t want your PPT to show the template name when you distribute the PPT to the end customer.
In PowerPoint 2010, go to the View Tab, click on the Slide Master button. Choose the template whose name you want to change on the left.
You get a small popup window to rename the Layout.
Enter the name you want to appear in the status bar, click Rename and you are done.
Close the Master View and you should now be able to see the new name you gave to the template appear in the status bar.