diff -Nru byobu-3.12/debian/changelog byobu-3.13/debian/changelog
--- byobu-3.12/debian/changelog	2010-11-28 02:45:01.000000000 -0500
+++ byobu-3.13/debian/changelog	2010-11-28 02:43:00.000000000 -0500
@@ -1,3 +1,9 @@
+byobu (3.13-0ubuntu1) natty; urgency=low
+
+  * Use getent instead of reading /etc/passwd directly.  (LP: #682296)
+
+ -- Anders Kaseorg <andersk@mit.edu>  Sun, 28 Nov 2010 02:42:25 -0500
+
 byobu (3.12-0ubuntu1) natty; urgency=low
 
   * etc/update-motd.d/55-window-manager: LP: #681616, fix printing of the
diff -Nru byobu-3.12/usr/bin/byobu-launcher-install byobu-3.13/usr/bin/byobu-launcher-install
--- byobu-3.12/usr/bin/byobu-launcher-install	2010-11-22 15:16:48.000000000 -0500
+++ byobu-3.13/usr/bin/byobu-launcher-install	2010-11-28 02:41:50.000000000 -0500
@@ -45,7 +45,9 @@
 fi
 
 # Install in zprofile if default shell is zsh
-if grep -qs "^$USER:.*zsh$" /etc/passwd; then
-	install_launcher "$HOME/.zprofile"
-fi
+case "$SHELL" in
+	*zsh)
+		install_launcher "$HOME/.zprofile"
+	;;
+esac
 
diff -Nru byobu-3.12/usr/lib/byobu/whoami byobu-3.13/usr/lib/byobu/whoami
--- byobu-3.12/usr/lib/byobu/whoami	2010-11-22 15:16:48.000000000 -0500
+++ byobu-3.13/usr/lib/byobu/whoami	2010-11-28 02:35:06.000000000 -0500
@@ -20,7 +20,7 @@
 color 2>/dev/null || color() { true; }
 
 if [ "$1" = "--detail" ]; then
-	grep "^$USER:" /etc/passwd
+	getent -- passwd "$USER"
 	exit 0
 fi