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    Oh! Ok. That might be the reason.<br>
    I'll try with a fresh profile instead of using the safe-mode.<br>
    <div class="moz-cite-prefix">On 28-04-2013 20:36, Emanuel Hoogeveen
      wrote:<br>
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cite="mid:CANYsK6moV9gQZVPQTmhU1XTrcaUCGPTux=BSOcCEAjHpb3BpMw@mail.gmail.com"
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        <div class="gmail_extra">Starting Firefox in safe mode also
          disables the JIT compilers. You should try it with a fresh
          profile instead (I tend to use the -profile switch to make it
          use a specific directory).<br>
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            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">From: Brunoais
              <<a moz-do-not-send="true"
                href="mailto:brunoaiss@gmail.com">brunoaiss@gmail.com</a>><br>
              To: <a moz-do-not-send="true"
                href="mailto:firefox-dev@mozilla.org">firefox-dev@mozilla.org</a><br>
              Cc: <br>
              Date: Sat, 27 Apr 2013 10:50:42 +0100<br>
              Subject: Is the current aurora (v.22) js engine slower
              than the current stable release (v.20)?<br>
              Firefox 20 seems to be faster in some key situations where
              firefox 22 is way slower.<br>
              Here's an example:<br>
              <br>
              <a moz-do-not-send="true"
href="http://jsperf.com/fastest-way-to-get-index-of-element-in-a-nodelist"
                target="_blank">http://jsperf.com/fastest-way-to-get-index-of-element-in-a-nodelist</a><br>
              <br>
              You may also see the charts for the current results.<br>
              <br>
              Is there any clue about why this is happening?<br>
              <br>
              Note: I'm using both browser instances in both -no-remote
              mode and in -safe-mode mode and with only 1 tab open.<br>
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