Plus one, though the only other time I saw this was when a friend attempted to true his wheels and over tightened a spoke and both eyelets pulled. That resulted in the outside eyelet looking like yours and the inside eyelet breaking into pieces which were loose inside the rim.

If the inside eyelet is fine then ride and not worry since most frames today are only single eyelets anyways.

Most of the time this scraps the wheel because the eyelets are riveted into the rim; but you could try loosening the effected spoke and remove the nipple and replacing the inside eyelet with a washer if it's broken. You could try this too if the washer idea fails: http://www.createforless.com/product...aspx?pid=72120

If you do manage to fix the rim, keep an eye on it for as long as you own the wheels, because usually if one eyelet fails others are soon to follow.

By the way my friend had Cosmos too!! I've had heard on other forums that some Mavic and Sun rims had this problem, I'm sure others have too. I've heard that some people have tried touring or clydesdale type of riders riding on single eyelet rims and having this problem.