http://blogs.msdn.com/b/jmstall/archive/2006/09/14/defragmenting.aspx... Don't run your disk defragmentor on your laptop when it's not plugged in. My battery went down fast! It seems so obvious in hindsight. On the bright side, the defragmentor kindly told me after it had drained my battery down to 20% that it was stoppingen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/jmstall/archive/2006/09/14/defragmenting.aspx#767466Sat, 23 Sep 2006 10:22:44 GMT91d46819-8472-40ad-a661-2c78acb4018c:767466Chicks Dig It BigDude, that is so obvious. I'd never try defragging on battery. My battery drains fast enough when I'm programming.<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=767466" width="1" height="1">http://blogs.msdn.com/b/jmstall/archive/2006/09/14/defragmenting.aspx#756334Fri, 15 Sep 2006 21:40:54 GMT91d46819-8472-40ad-a661-2c78acb4018c:756334BrandonMaybe instead of saying Warning, it could very politetly point out that you need to Plug your Laptop in so it won't have to stop midway through? &nbsp;But the Warning is good to, I could just see people just clicking the OK button without reading what the message actually says.<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=756334" width="1" height="1">http://blogs.msdn.com/b/jmstall/archive/2006/09/14/defragmenting.aspx#754387Thu, 14 Sep 2006 20:43:17 GMT91d46819-8472-40ad-a661-2c78acb4018c:754387Mark WebbDiskeeper has an option to automatically disable when not plugged in, and does a great job of keeping the disk clean.<div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=754387" width="1" height="1">