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<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>Bad RAM can cause all sorts of problems. So can dirty contacts on the RAM.</blockquote>
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<div>The Mac Centre ran the usual diagnostics, which I assume include RAM...</div><br> </div>