1  Bitcoin-Qt version 0.8.6 final is now available from:
 2  
 3    http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.6/
 4  
 5  This is a maintenance release to fix a critical bug; we urge all users to upgrade.
 6  
 7  Please report bugs using the issue tracker at github:
 8  
 9    https://github.com/bitcoin/bitcoin/issues
10  
11  How to Upgrade
12  --------------
13  
14  If you already downloaded 0.8.6rc1 you do not need to re-download. This release is exactly the same.
15  
16  If you are running an older version, shut it down. Wait
17  until it has completely shut down (which might take a few minutes for older
18  versions), then run the installer (on Windows) or just copy over
19  /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).
20  
21  If you are upgrading from version 0.7.2 or earlier, the first time you
22  run 0.8.6 your blockchain files will be re-indexed, which will take
23  anywhere from 30 minutes to several hours, depending on the speed of
24  your machine.
25  
26  0.8.6 Release notes
27  ===================
28  
29  - Default block size increase for miners.
30    (see https://gist.github.com/gavinandresen/7670433#086-accept-into-block)
31  
32  - Remove the all-outputs-must-be-greater-than-CENT-to-qualify-as-free rule for relaying
33    (see https://gist.github.com/gavinandresen/7670433#086-relaying)
34  
35  - Lower maximum size for free transaction creation
36    (see https://gist.github.com/gavinandresen/7670433#086-wallet)
37  
38  - OSX block chain database corruption fixes
39    - Update leveldb to 1.13
40    - Use fcntl with `F_FULLSYNC` instead of fsync on OSX
41    - Use native Darwin memory barriers
42    - Replace use of mmap in leveldb for improved reliability (only on OSX)
43  
44  - Fix nodes forwarding transactions with empty vins and getting banned
45  
46  - Network code performance and robustness improvements
47  
48  - Additional debug.log logging for diagnosis of network problems, log timestamps by default
49  
50  - Fix Bitcoin-Qt startup crash when clicking dock icon on OSX 
51  
52  - Fix memory leaks in CKey::SetCompactSignature() and Key::SignCompact()
53  
54  - Fix rare GUI crash on send
55  
56  - Various small GUI, documentation and build fixes
57  
58  Warning
59  -------
60  
61  - There have been frequent reports of users running out of virtual memory on 32-bit systems
62    during the initial sync.
63    Hence it is recommended to use a 64-bit executable if possible.
64    A 64-bit executable for Windows is planned for 0.9.
65  
66  Note: Gavin Andresen's GPG signing key for SHA256SUMS.asc has been changed from  key id 1FC730C1 to sub key 7BF6E212 (see https://github.com/bitcoin/bitcoin.org/pull/279).