Thank you for your answers!
It looks like my POP server was late in alerting me that I had gotten replys, so I went on and asked the same question on the Adobe Bridge Forum, and the answer is, that the file is corrupted in the Bridge cache, and purging that via the Tools menu cured the problem. This is Bridge 2.1.1.9, that came with PS CS3 10.0.1. Earlier versions of Bridge, I learned, could in fact damage image files.
Thanks again! - Hening.