v. 1.0.0.0

doc/release-notes/bitcoin/release-notes-0.8.1.md

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+Bitcoin-Qt/bitcoind version 0.8.1 is now available from:
+  http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.1/
+
+This is a maintenance release that adds a new network rule to avoid
+a chain-forking incompatibility with versions 0.7.2 and earlier.
+
+Please report bugs using the issue tracker at github:
+  https://github.com/bitcoin/bitcoin/issues
+
+
+How to Upgrade
+--------------
+
+If you are running an older version, shut it down. Wait
+until it has completely shut down (which might take a few minutes for older
+versions), then run the installer (on Windows) or just copy over
+/Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
+
+If you are upgrading from version 0.7.2 or earlier, the first time you
+run 0.8.1 your blockchain files will be re-indexed, which will take
+anywhere from 30 minutes to several hours, depending on the speed of
+your machine.