In WebmasterWorld, a Google AdWords advertiser mentions that he's having difficulty tracking his ads because it appears that Google has mixed his uniquely tagged keyword ads with creative ads.
I have both creatives and keywords all individually and uniquely tagged. Since Tuesday, July 24th, an increasing percentage of clicks that should have gone through a keyword destination URL instead go through a creative URL.
This issue is said to be confirmed by another member who has already contacted his Google rep for a fix.
Forum discussion continues at WebmasterWorld.