The problem that has been stated is the off gassing of formaldehyde. This isn't a problem with the melamine itself (the melamine part is the plastic resin coating), but with ALL particle boards. As I stated in the other thread you have particle board already throughout your house. Cabinets, parts of many pieces of furniture, your counter tops, the underlayment on your floors, all have pieces or are entirely made of particle board. It's kind of hard to get away from.
However I don't doubt that newly manufactured particle boards may contain much higher levels of formaldehyde then stuff that's been around for a while. If you have any worries, you may want to leave your racks in the garage for a month or so after you've built them to allow most of the off gassing to occur in a ventilated area.
Here is an interesting web site that may prove helpful.
http://www.health.state.mn.us/divs/e...rmaldehyde.htm
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