Is anyone else experiencing the same thing?

Every time I try and change the background of my blog it shows up plain white and then a small square pops up that says, "Look who's popular..." Has anyone else out there had this problem? I can't seem to figure out how to fix it. If you happen to know how will you please help me? Thank you!!! I'm kind of tired of seeing, "Ho Ho Ho" on my blog. It's February for crying out loud!