Our friend Liz Castro reports that when the new iPhoto '11 (which hasn't arrived here yet) attempted to upgrade her iPhoto Library, it failed in such a way as to delete 230 GB of photos. Others are seeing the problem too, so you should either avoid installing iPhoto '11 until there's a fix from Apple or make sure you have multiple backups before installing. It's also probably best not to interrupt the upgrade process, no matter what.follow link
Expand Finder Columns Quickly
Column view in the Finder is great for navigating through your disk's hierarchy, but the columns often aren't wide enough to show the full names of all the files. To expand a column to a width that will show all file names in their entirety, double-click the handle that you would normally drag to expand or shrink the column. To expand all the visible columns to that width, Option-double-click the handle.
Back Up Before Installing iPhoto '11!
I used the advice in Liz's comments to delete the upgrade file in the application package, and then everything was fine.
So if I have the iLife '11 disk, how do I install the "fix" (which I assume would be a .1 revision software upgrade) without installing the original disk version, which has the potential to delete my photos? Seems like a Catch 22.
Apple told Liz Castro yesterday that there's an update coming very soon.
David Ticzon's post (at http://www.macintouch.com/readerreports/ilife11/index.html#d28oct2010 - scroll down a bit to read it) describes how iPhoto plug-ins were the cause of his woes, and that an Apple engineer confirmed this. He also mentioned that doing the conversion in Safe Mode (hold down Shift during iPhoto startup) might also make the conversion safer.
Apple also has released a support document that describes the problem that the updater fixes with advice for how to avoid the issue: http://support.apple.com/kb/HT4431