Dear Graduate Students,
Since I am an old biddy and we only had transparencies and chalk talks back when I was in grad school, this does not fall under the category of things I used to do but now tell you not to do. Anyway, you're lucky you can just connect your computer up to the projector and give a presentation, but you might want to be careful with what you have on there. Trust me on this one. If you're using a thumb drive, get one just for work. Have lots of subfolders. The same goes for you computer. Do not have lots of movies and naked pictures up there in the same folder as your group meeting slides. Trust me on this. I may be an old biddy, but I do have naked pictures on my computer, but they are hidden away so deeply that there is no way they'd accidentally end up next to my group meeting slides.
Likewise, and I say this as a great big email/IM fan, do not leave Gmail open when you are giving a presentation, or at least sign out of chat. Please. You know that's an invitation for disaster, especially if you still IM your ex, like some old biddies do. Turn off that email notifier that gives you a preview of the message too. (This one I have seen cause some raised eyebrows during phone conferences at my old company)