i think u should post in his topic instead, so u can get better help.
here:
http://forum.xda-developers.com/showthread.php?t=536751
But it has over 140 pages last time i checked, so it's a bit annoying lol.
I'm using the July 28th build and haven't experienced this problem yet. But I did notice in the previous versions that my phone will sometimes just freeze and not respond to anything, this happens only when i'm loading a program or something. It really depends on what apps you're using and how many of them you run though.....
btw nobody ever reply to my question on his topic, I wanted to know if it's normal that the wait/load animation is changed to a blue circle, coz the old animation was really cool and i think he changed it in the newer builds which made it suck.....