When u guys go travelling, is it a good idea to put your laptop in those wheelie handluggage type bags? Reason I ask is because i had mine in there, and I was pulling it across a cobblestone road. And the bad just vibrating like crazy going across. And i was thinking of my poor laptop (and it's HD) bouncing away in there as well... I know it was powered down and parked, but all that vibration cant be good for it, especially the HD. Or am I just too paranoid?