I've got a weird problem with Firefox and Internet Explorer (on Windows, but Firefox on OS X has the same issue). Some images, like this one:
http://lh4.google.com/image/shifuima...IeU/Creek2.jpg
...won't open inside a web browser. Instead, it pops up the window one sees when downloading a file from the internet.
If I create an HTML file that links to the image using <img src="...">, it displays just fine.
Any ideas? It's not a terrible inconvenience, it's just weird.