I just noticed this on the dev meta, but If i click on on the "accept answer" link before 15 minutes, I get a "You can accept an answer in X minutes", however, if I then click on the up-vote (if I don't have enough rep), it overlays the alerts ontop of each other, making it appear as:

[alt text http://img.skitch.com/20100518-k4r79xju3ijix47inpn7amnkft.jpg](http://img.skitch.com/20100518-k4r79xju3ijix47inpn7amnkft.jpg)

Or as "Vote up requires 15 reputation inutes" -- it just looks really weird

**Update**: I noticed that this happens on all overlays on all sites (when there are multiple overlays on top of each other)