We installed some AP loaded with beta7 and all of them decied to use the same frequency. The dfs and the scan list is correctly configured but seems dfs is not able to detect the other 2.9 or 3beta7 aps.
We also gott one of the aps locking at 100% cpu utilizzation and was not able to do the supout.....I will try again next time I will keep it in that state.
Hope you will fix it asap.
Regards