<div>I had the same problem with my dual Xeon processor and the mistake I was making was that I was fixing the spinlock.h in /usr/src/kernels/2.6.9-34.0.2.EL-i686/ and not in /usr/src/kernels/2.6.9-34.0.2.EL-smp-i686/ where I actually needed to do it.
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<div>Once fixed it in the right place, zaptel installation went smooth.</div>
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<div>Zeeshan A Zakaria</div>