10.6.3 update requires either a binpatched kernel or the Chameleon fork from NetBookInstaller to run on Atom processors. Additionally, the new version of AppleIntegratedFramebuffer is causing wake from sleep issues on many netbooks (black screen, and strangely a non-functional trackpad). Reverting to version 1.6.6 from 10.6.2 fixes this.
Any chance at all we could not only see an update to Chameleon, one that adds 1024x600 video and Atom support for netbooks, ala NetBookInstaller's fork?