--- a/mercurial.tex
+++ b/mercurial.tex
@@ -388,19 +388,26 @@
 \begin{frame}{Distributed Revision Control}
   Mercurial duplicates the history on many servers:
   \begin{center}
-    \begin{tikzpicture}[start chain]
+    \begin{tikzpicture}[start chain, bend angle=10]
       \tikzstyle{every node}=[repository, minimum height=18mm, text width=15mm,]
       \tikzstyle{every path}=[<->]
 
-      \node (a) at (4,5) {Alice};
-      \node (l) at (0,6) {Alice's Laptop};
-      \node (b) at (1,1) {Bob};
-      \node (c) at (7,2) {Carla};
+      \node (a) at ( 90:3) {Alice};
+      \node (b) at (210:3) {Bob};
+      \node (c) at (-30:3) {Carla};
+      \draw<1-2> (a) -- (b);
+      \draw<1-2> (b) -- (c);
+      \draw<1-2> (c) -- (a);
 
-      \draw (a) -- (l);
-      \draw (a) -- (b);
-      \draw (b) -- (c);
-      \draw (c) -- (a);
+      \node<2->[overlay] (l) at ([xshift=3cm] a) {Alice's Laptop};
+      \draw<2-> (a) -- (l);
+
+      \node<3-> (r) at (0, 0) {Server};
+      \draw<3-> (a) -- (r);
+      \draw<3-> (b) to[bend left] (r);
+      \draw<3-> (c) to[bend right] (r);
+
+      \draw<4-> (b) to[bend right] (c);
     \end{tikzpicture}
   \end{center}
 \end{frame}