<div dir="ltr"><span id="docs-internal-guid-a0e5cac7-110d-9a6a-bc2e-135122fd29ea"><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">Hi GROMACS users,</span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">GROMACS 4.6.6 is officially released. It contains many bug fixes, including significant fixes to non-bonded interactions that use modifiers, of particular importance in free-energy calculations. We encourage all users to upgrade their installations from earlier 4.6.x releases. All the applicable content in 4.6.6 is also found in the 5.0 release.</span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">This is the last planned release for the 4.6 series. Our resources only permit us to support one stable branch, which is now that of 5.0. We might revise that and make a new 4.6.7 release if new evidence of serious problems is found.</span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">You can find the code, manual, release notes, installation instructions and test suite at the links below. Note that the tests and manual have not changed since 4.6.5.</span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent"><a href="ftp://ftp.gromacs.org/pub/gromacs/gromacs-4.6.6.tar.gz">ftp://ftp.gromacs.org/pub/gromacs/gromacs-4.6.6.tar.gz</a></span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent"><a href="ftp://ftp.gromacs.org/pub/manual/manual-4.6.6.pdf">ftp://ftp.gromacs.org/pub/manual/manual-4.6.6.pdf</a></span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent"><a href="http://www.gromacs.org/About_Gromacs/Release_Notes/Versions_4.6.x#Release_notes_for_4.6.6">http://www.gromacs.org/About_Gromacs/Release_Notes/Versions_4.6.x#Release_notes_for_4.6.6</a></span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent"><a href="http://www.gromacs.org/Documentation/Installation_Instructions_4.6">http://www.gromacs.org/Documentation/Installation_Instructions_4.6</a></span></p>
<p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent"><a href="http://gerrit.gromacs.org/download/regressiontests-4.6.6.tar.gz">http://gerrit.gromacs.org/download/regressiontests-4.6.6.tar.gz</a></span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">Happy simulating!</span></p>
<br><p dir="ltr" style="line-height:1.15;margin-top:0pt;margin-bottom:0pt"><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">Mark Abraham</span></p>
<br><span style="font-size:15px;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap;background-color:transparent">GROMACS development manager</span></span><br></div>