I've got no idea if this is your problem, but the last version of iPhoto for OS X 10.6.8 is iPhoto '11 v 9.2.3 , and it...

Originally Posted By: Apple
Addresses an issue that could cause iPhoto to quit unexpectedly on systems with multiple user accounts

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire