With latest build:
Version 10 build 2500_3381 (released on 08 OCT 2009 08:49 AM)

Alpha Five itself becomes intermittently nonresponsive without apparent cause. I am experiencing this approximately once per hour (give or take) as I move to open various existing components within the control panel. No rhyme or reason. Three-fingered salute, kill A5, relaunch A5, open the component and resume where I left off, all goes well. Until next time.