Question: Time Machine doesn't backup iPhoto Library (if iPhoto is open)
I've just posted this information to my blog: http://www.pigsgourdsandwikis.com/2010/01/timemachine-is-not-backing-up-your.htm l
But the basics are that although Time Machine promises to perform automatic backups in the background, it will skip your photos if iPhoto is open. Unfortunately, it won't tell you it hasn't done the backup and you'll be lulled into a very false sense of security, broken only when you have a problem and there's no backup to be found.
So, be sure to close iPhoto when Time Machine is doing backups and check your backed up files to make sure all your photos are there.
Please spread the word. I hate to think people are losing their photos because of this.
MacBook Pro, Mac OS X (10.5.8), iPhoto 8.1.1