I've used one of those sleeve protection things, and it didn't save my laptop in my bag. Its only good for protection in your bag from the other stuff inside your bag(!), and will not protect your laptop from shock when some baggage handler or otherwise dumps/throws/drops/squashes your bag with sufficient force.
Best advise I can give is put it in a laptop shoulder bag and have it with you in person at all times. As inconvenient as it is, its the only way to be sure
Last edited by DeltaT; 18th Oct 2008 at 21:21.