To be honest I am not sure how often it happens either ;-)
My wife shoots an ol' Pentax MX Fully Manual. We spent a few days in Hong Kong Last year.. Took a trip up to the Big Buhdda... Not sure if her roll did not wind properly or what.. But she got 0 photo's out... She was very disappointed.. Probably not so much an issue in today more modern film camera's however.
Originally posted by Kit
Hmmm......... actually, after 4 years, nope haven't experienced that(touch wood).