Add 0.6RC and 0.5.3.1 download links

critfix.html

@@ -21,6 +21,13 @@ <h1>Potentially Critical Security Vulnerability</h1>
 If you have any questions, feel free to drop by <a
 href="http://webchat.freenode.net/?channels=bitcoin-dev&uio=d4">
 the #bitcoin-dev channel</a> on Freenode IRC.
+</p><p>
+You can download updated binaries from SourceForge:
+<a
+href="https://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.6.0/test/">
+0.6 Release Candidates</a><br><a
+href="https://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.5.3/">
+0.5.3.1 for Windows and 0.5.3 for Linux</a>
 </p>
 <div style="text-align:right">
 <i>This notice last updated: Fri Mar 16 22:58:00 UTC 2012</i>