CTRL+SHIFT+EJECT
Works in Snow Leopard.
Note: Before that, check the General tab on the Security System Preferences panel to ensure that the "Require password [some period] after sleep or screen saver begins" box is checked.
This file with strange file name has lived in my Trash for over a month. I finally get rid of it today.
It's caused by the FAT32 partition for Windows. I booted Windows and deleted the files in the hidden directory "C:\.Trash" and similar folders. Then the problem is solved.
Update Aug 20th, 2011.
In Lion, you can still find it in Universal Access -> Mouse & Trackpad. Just one more click on Trackpad Options... as below.
Update Oct 7th, 2009.
The option appears in Universal Access -> Mouse & Trackpad. I remember that I have checked here before 10.6, this must be new in Snow Leopard. Anyway, it's much easier now.
Thanks to Mary pointed this out in comment.
I moved the OS X Leopard from the old MacBook to new MacBook and I found that the setting in the Trackpad was missing. I set to "Ignore trackpad when mouse is present" before. After moving the hard disk to new MacBook and reinstall the system without erasing old data, I could not change the setting anymore.
I searched the official MacBook forum and got the solution for that:
Yes, it's comfortable, easy to use. When touching the keyboard, it feels so good! Comes with OS X Leopard and fully support of Windows, MacBook is definitely the very notebook for me. No wonder why P is strongly recommending it. VMware Fusion makes it so easy to access Windows in OS X, Boot Camp can help to install a stand alone Windows in a separated partition. In fact, after using OS X, I think Windows can be just a tool, a tool for working, OS X is the one that fits in the life. But in the same time, I like my powerful ThinkPad too. I can not give up any of them. It's really a hard decision to make.
