Yeah, 9.21.03 had a few bugs, I've been running 9.21.04 for a few weeks and it was pretty good, upgrading to 9.21.05 now. I did notice .04 was rebooting from out of memory, good to hear it's fixed. Given how critical wifi is to students and teachers, our new policy is going to be to wait for at least 4 or 5 point releases before upgrading to a new version.