Or rather, it decided to go down the stairs by itself while I was not looking. I'm moving tomorrow, so I was getting all my stuff packed up in my new old truck, and the bass amp was the first item to get loaded up. I set my rack next to the bannister, and walked away from it to get help from my roommate down the hall. Not 10 seconds later I hear a crash. I run out just in time to see my amp dissappear down the first step - eek! It crashed it's way down a full flight of steps, destroying the walls, steps, and finally the 100 year old solid redwood door. This monster actually buckled a 3" piece of redwood in two places, all the way top to bottom. That door is going to cost me $2000 to replace, but as of tomorrow I don't even live here anymore. Damn. I opened the rack, and not a single tube was broken - all 20 intact. Everything appears to be ok, but I won't know that for sure until I get to my new place and plug it all in. To be perfectly honest, I don't think anything in there is going to be broken at all; this rack is a monster. The moral of this story? Don't ever leave a rack with wheels unattended next to a flight of stairs, and if you do, make sure it's a Mesa/Boogie shockmount. I'm sure that if I'd had a non-shockmounted rack I'd be out alot more than just a turn of the century door.