[pics] Honeymoon fail: help me diagnose my borked camera!

Hello from my honeymoon in Argentina

I have a Canon Powershot G11 which I've loved for the past 2.5 years. I think the sensor might have packed it in today, would really like to have a few second opinions if some of ye have a chance to look please.

The camera was doing grand today - see before.jpg attached. A few hours later and all pics are overexposed and have errors - see after1.jpg ( the first pic taken after before.jpg) and after2.jpg attached. I'm pretty sure the camera didn't take a knock during the interval.

At first I thought it was leaking light (it took a knock about a year ago which separated the outer shell a bit from the main body, but had no other impact)... but when I block out the lens and take a photo, the result is a fully-black picture. Is that a reasonable assumption?

Any ideas or suggestions? Will be a pity to have to take the remaining honeymoon photos on my phone

Thanks