I've seen flashers, scrollers, and all manner of stuff here. But it's not something the moderators can fix, it's really your fault in a way!
Let me explain; notice how those ads are strangely tuned to what your interests are? The ad space is displaying different for every user of this board, since ads are being put up there based on data gathered from your browsing habits. So if you, like me, spend time looking at motorcycle stuff, you'll see ads about motorcycle stuff. If you spend time online shopping for office supplies, you'll see ads for Staples online, etc...
That explains why some people see ads that flash and others don't.