'iPhoto has detected discrepancies in your library', 'click to Cancel or click to Restore'

'Soz' thought I (too polite I know).

Click to 'Restore' is my immediate reaction.

Then that gut wrenching feeling of despair hit me at the thought of losing 10 years worth of photographic memories of family, friends and of France. We have over 31000 photos all of varying degrees of good, bad and downright awful images.

Then I remember that we have external drives, phew! But what if those external drives are corrupted as well? What then?

Luckily all was restored. But what if.....?

I had 10 years of photos,200 movies and 500 cds on an external drive...and it went kaput! couldn't recover anything!