I asked this question on Superuser.com after experiencing this problem. Now it’s accessible to everyone.

When something goes wrong and you run out of memory on Mac OS X, the system puts your existing applications to pause to prevent the system from becoming unstable. After taking care of the problem and freeing more memory, you might notice that the applications you had are still frozen. To unpause them, find their PID using ps and use the kill command to revive it (irony)

kill -CONT 111

Of course, 111 here is replaced with the PID you found with ps

Just got Snow Leopard and installed Boot Camp 3.0 on Windows? Boot Camp 3.0 is definitely a well welcomed update. The trackpad works much better now with 2 finger tap for secondary click, it finally works like in OS X. Even better, you can now access HFS+ without third party apps in Windows. Definitely nice for Windows 7 x64 users that MacDrive doesn’t even support. But one problem that seems to trouble people in the forums is that navigating to /Users/[yourname] in Windows shows an empty folder. You can’t access your music or pictures or anything from Windows.

One possibility is the presence of a .Xauthority file in your $HOME directory. Delete the file and you may access your home directory in Windows. Remember that running X11 will recreate the file. Delete it again.

To automate the whole process, consider creating a script that lets you boot into Windows worry free.

tell application "Finder"
	if exists file "~/.Xauthority" then
		delete file "~/.Xauthority"
	end if
end tell
do shell script "bless -mount /Volumes/[your Windows device]/ -legacy -setBoot -nextonly" with administrator privileges
do shell script "shutdown -r now" with administrator privileges

Put this in AppleScript editor and save it as a .app to make it executable. You can manpage the bless command for more options. You can also change the icon like any other app. At that point, you can invoke this via QuickSilver and a GUI dialog will prompt you for password.

It’s also possible that there are no .Xauthority files in the subdirectories so simply type in explorer the subdirectories to access them directly. ie: D:/Users/[you]/Desktop