It seems there is a significant bug in AIR 2 runtime. Prefab is far from behing an isolated case running under AIR runtime 2.x
A short quote of a message posted on Adobe AIR a few moments ago by Rob Christensen, product manager for Adobe AIR. Concerning these CPU/performance issues. "Please stay tuned for future updates on this. Addressing this issue is a high priority for our team. We expect to release an update in the next several weeks. I will also be making available a tech note shortly that describes how to download older builds of the AIR runtime and SDK. " in short, until an update is provided by Adobe, please downgrade AIR runtime to 1.5.3 in order to use Prefab prior to update. One good thing tho, because of this, I've cleaned up a few more things. I'll upload another update very soon. Fabrice
