About a week and a 1/2 ago I suffered a pump failure of my little ViaAqua. The computer was off at the time, but I didn't know the pump had died and I turned it on. Windows booted, I logged in, started up IE, and started surfing around. After about a minute of time in windows MBM popped up saying my CPU was at ~60 C so I closed IE and shut down windows - it did finish shutting down and everything before it locked up. There was no damage at all to any hardware (not even a dirty windows shutdown). The CPU is a barton core running at 2300Mhz at I think 1.8V and had nothing more than a Maze-2 full of water but no flow at all to dump heat into for the entire time it was running.
On the bright side, it gave me a very good excuse to upgrade
Sitting on my desk at home waiting for assembly is now a Maze-4, a danger-den z-chip cooler for my northbridge, a MCW-50, a Hydor L30, a dtek rad/shroud combo, and various tubing, hose-clamps, etc.