Mind if I ask what you are running Chrome OS on? I have been interested in picking up a Chromebook, but the reviews for them are very bad. It seems that locking up, crashing and even flat out dying after a couple of months is surprisingly common.
I had Chrome OS running pretty smoothly on a Sylvania G Meso (a cheap netbook). I got a bootable disk image here: http://chromeos.hexxeh.net/
Running it on the ARM Chromebook which has been absolutely perfect so far (~2 weeks). No locking up or crashing at all. Great battery life, keyboard as good as my MacBook Pro and a great trackpad for the size. Overall very, very happy with my purchase given my use case (just a second computer for class/travel).