Clicking on photo in iPhoto 6 almost always opens it in editor

Question

Almost every time I single-click on a photo in iPhoto 6.0.5, trying to select it, it opens in the editor that has been chosen in Preferences. If I try to select a group of photos, they will all open in the editor. I thought it was: single-click to select, double-click to edit. But single-clicking usually jumps directly to editing, which is very frustrating as this makes it impossible to select groups of photos to move. Could this be a mouse issue or have others experienced this in iPhoto?

Answer 1

To prove or disprove it's an iPhoto issue create a new, temporary library (launch with the Option key depressed and, when asked, opt to create a new library) and import a few image files. Set the same editor as your preferred and try to select a thumbnail. It it words OK then it's the library. You then have two options:
1 - rebuild the library with iPhoto (launch iPhoto with the Command+Option keys depressed and follow the instructions to rebuild the library)
2 use iPhoto Library Manager to rebuild the library. It create a new one without modifying the old and copies the files and info from the old library. Here's how:
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your User/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File->Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: It can take some time to create the new library if you have a lot of photos. One user reported that with a library of about 5,000 images it took about 12 hours so plan ahead.
If the temp library also won't work correctly then you'll need to reinstall iPhoto from the source disk it came on. If you do try a reinstall of iPhoto you'll have to delete the current application and all files with "iPhoto" in the file name that reside in the HD/Library/Receipts folder.