A Google Maps Help thread reports there is a bug with a certain type of street views output. The output=svembed option, which can be used to show Panoramio images and works well in Flash, seems to be blurring the images.

The person in the thread linked to an example but his major complaint is that the images on his site look blurry. His site is streetviewing.com and as you can see, the views aren’t too clear.

Brian B. from Google confirmed the bug and said the team is on it:

I should also add, some people are having issues with the beta distance measuring tool.

Forum discussion at Google Maps Help.