Please make sure AdBlock Acceptable Ads are turned off: https://adblockplus.org/acceptable-ads#optout
If that doesn't help create a new thread describing your problem and how to reproduce it. Please include any links or screenshots that may be relevant.
Amazon/Google/Yahoo/MSN etc ads with AdBlock Plus
Amazon/Google/Yahoo/MSN etc ads with AdBlock Plus
"If it ain't broke don't fix it."