Lost event and changed button functionality

Iphoto crashed while I was writing comments about photos in an event. This was the second last event imported. On relaunching the event has been duplicated but both events are empty.
The next strange thing happened when I reloaded the photos again. I now find that the buttons of the top, next to the line "1 photo selected" do not move from photo to photo as they used to but takes me to an adjacent event.
Iphoto 9.4.1, OS x 10.7.5
Any thoughts?
Mike

my mouse has 3 buttons and 2 axis mouse wheel, but i use the evdev driver anyway, because it has lower latency. I may probably switch to evdev for the keyboard too. evdev is a driver for usb devices.
http://wiki.archlinux.org/index.php/Get … ns_Working
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