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copied!<p>I had the same problem and I ended up finding out that this seems to be <a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=386171" rel="noreferrer">a known bug in DALI</a> (Eclipse Java Persistence Tools) since at least eclipse 3.8 which could cause the <a href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=361763" rel="noreferrer">save action in the java editor to be extremly slow</a>.</p> <p>Since this hasn't been fully resolved in Kepler (20130614-0229) yet and because I don't need JPT/DALI in my eclipse I ended up manually removing the <code>org.eclipse.jpt</code> features and plugins.</p> <p>What I did was:</p> <p>1.) exit eclipse</p> <p>2.) go to my eclipse install directory </p> <pre><code>cd eclipse </code></pre> <p>and execute these steps:</p> <p>*nix:</p> <pre><code>mkdir disabled mkdir disabled/features disabled/plugins mv plugins/org.eclipse.jpt.* disabled/plugins mv features/org.eclipse.jpt.* disabled/features </code></pre> <p>windows:</p> <pre><code>mkdir disabled mkdir disabled\features mkdir disabled\plugins move plugins\org.eclipse.jpt.* disabled\plugins for /D /R %D in (features\org.eclipse.jpt.*) do move %D disabled\features </code></pre> <p>3.) Restart eclipse. </p> <p><em>After startup and on first use eclipse may warn you that you need to <strong>reconfigure your content-assist</strong>. Do this in your preferences dialog.</em></p> <p>Done.</p> <p>After uninstalling DALI/JPT my eclipse feels good again. No more blocked UI and waiting for seconds when saving a file.</p>

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