Apple is seeding a fourth developer build of Mac OS X 10.6.5, 10H535. Developers are being asked to concentrate testing on the same areas as before, including Mail, iCal, QuickTime, Time Machine, 3D rendering and USB devices. The known issue from the last build is still present, and has in fact been expanded to include Parallels as a culprit, alongside VMware. Having either of the virtualization platforms installed may prevent USB devices from working when a Mac comes out of sleep.
