Are you sure? I always thought OS X would just go through the installed .pkg packages and check for new versions on Apples Servers, which would make it easy to have a sense of the tasks done and ahead.
The 10.5.3 Update also has a release note about the progress bar:
"Improves the accuracy of the Software Update progress bar indicator."
The 10.5.3 Update also has a release note about the progress bar:
"Improves the accuracy of the Software Update progress bar indicator."
http://support.apple.com/kb/HT1141?viewlocale=en_US&loca...