Do you follow these instructions to the letter ? Yesterday I cooked a M&S pizza which I'd had in my freezer; I defrosted it first, it cooked beautifully and it tasted really good (spinach and garlic mushrooms if you're wondering). Afterwards, I noticed the packaging said that it wasn't for home freezing but, 24 hours later, no harm done. On umpteen occasions I've cooked lasagne in the oven, with the intention of reheating in the microwave at the office that evening. Not supposed to reheat, apparently, but I'm still here. Are these 'warnings' more for the protection of the retailer or manufacturer rather than the health of the consumer ?