Fascinating. I was shopping for new sneakers the other day and was shocked at how many people over the last couple of years had reported new pairs of New Balance shoes having exactly the same "smells like cat urine" problem (see: http://ask.metafilter.com/182458/Something-peed-in-my-sneake..., http://reviews.newbalance.com/9328/M990/new-balance-new-bala..., http://www.zappos.com/product/review/7944390/page/1/start/5, or just Google "new balance odor").
The prevailing theory is that it has something to do with the glue they use when assembling the shoe. I wonder if the same glue is hidden in these laptops somewhere...