I have a 4 years old Adsense Account. I recently used Adbrite Network for Some of my Sites promoting affilite programs from cj and neverblueads which also contain Adsense Ads on it. Because of the Poor Adbrite traffic may be most of invalid clicks delivered to my sites from Adbrite Publisher; Google email me for Invalid clicks on my sites and Hold my Payment on July 16th Adbrite investigate my traffic and return me $2120 for Invalid clicks between July1 and July8, 2007 I also inform about this to adsense support. Anyone has same problem occurred before. When they will release my Payment? Still no reply from Adsense Support after 4 days.
You have good luck that google didn't banned you yet. Most of the publisher don't get warning message before ban.