Thieves stake out hot parking spots and wait for fancy-pants business types to leave their laptop bags in the car, even just for a few minutes. All they have to is smash a window and grab it, and they're gone in 10 seconds flat. Or, maybe you thought you got smart, and you put your laptop in the trunk, out of sight--too bad you waited until you got to Sketchy Street to do it, where the bad guys watched you every step of the way. Trunks are even easier to pop open than windows. Stow your rig in the trunk before you embark on your trip. Better yet, take the laptop with you, or try a travel lock.
10. Keeping All of Your E-Mail
Every e-mail message you've ever received is sitting in your inbox in chronological order. Congratulations! You now have an unassailable historical record of your communications...and a guarantee that you will never find anything of any importance whatsoever. Use folders or tags to organize your inbox, and be liberal with the Delete key.
11. Failing to Learn Keyboard Shortcuts
Did you know that some people out there still aren't aware that Ctrl-C is copy and Ctrl-V is paste? I'm not saying you need to learn every Alt-Ctrl-Shift combo, but the more Alt-F4s you pick up, the sooner you can go home. Drop the mouse and try a few essential shortcuts for shutting down a PC and more, and several specific shortcuts for Windows 7.
12. Installing Too Much Junk
Why is Windows so slow? You installed three instant messaging clients and seven browser toolbars on your machine. Once some of this stuff is installed, the damage is already done, as many of these apps leave behind traces that are impossible to eliminate. You can try uninstalling as much as possible, but a clean Windows setup is often your best bet.
13. Discarding Receipts
Null's Law dictates that consumer products will always break immediately after the expiration of their warranty--but once in a while they break sooner. You might be able to get the thing fixed...if you saved your receipt. Keep a folder next to your medical records. Once you collect some receipts, you can scan and organize them with the Neat Receipts system.
14. Waiting in Line for Tech Stuff