Apple has released its anticipated iPhoto 9.3.1 update, a 600 megabyte download, which adds the following fixes and changes: Addresses a problem during the migration of albums from MobileMe Gallery that may cause photos to be moved from their original events into a new event called “From MobileMe”; Fixes an issue that in rare cases could cause iPhoto to hang when upgrading libraries.

iPhoto 9.3.1 retails for US$49 as part of iLife ’11 and requires Mac OS X 10.7.4 or later to install and run, powerpage.org reported.