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doc/bitcoin-release-notes/release-notes-0.6.3.md

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+Bitcoin version 0.6.3 is now available for download at:
+  http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.6.3/
+
+This is a bug-fix release, with no new features.
+
+Please report bugs using the issue tracker at github:
+  https://github.com/bitcoin/bitcoin/issues
+
+CHANGE SUMMARY
+
+Fixed a serious denial-of-service attack that could cause the
+bitcoin process to become unresponsive. Thanks to Sergio Lerner
+for finding and responsibly reporting the problem. (CVE-2012-3789)
+
+Optimized the process of checking transaction signatures, to
+speed up processing of new block messages and make propagating
+blocks across the network faster.
+
+Fixed an obscure bug that could cause the bitcoin process to get
+stuck on an invalid block-chain, if the invalid chain was
+hundreds of blocks long.
+
+Bitcoin-Qt no longer automatically selects the first address
+in the address book (Issue #1384).
+
+Fixed minimize-to-dock behavior of Bitcon-Qt on the Mac.
+
+Added a block checkpoint at block 185,333 to speed up initial
+blockchain download.