Took my 510 on a short trip out of town and found myself in a rare situation where I thought I could pull off a creative rear curtain shot with just the popup flash. Well, the thing flips up but never goes off. The charge indicator on the lcd remains red as if the flash is charging no matter how long I wait.

Anybody ever have this happen to them?

It's really not a big deal since I've used the popup maybe twice but I was a bit surprised to find that it was pretty much broken on my 510.