I added another ad on my site recently and the ctr went up quite a bit its now around 11% should i be concerned, i dont heard that adsense flags accounts when they get past 10% so thats why im asking. Thanks
If these are genuine clicks and your site is fine with the AdSense TOS, then it's perfectly OK to have a CTR as high as possible. You have to worry only if these are fraudulent clicks.
You need not worry about the high CTR since you are getting genuine visitors and there is no fraudulent clicks. At times, I used to get 15% CTR