Apple today released iTunes 11.1.3, two weeks after iTunes 11.1.2 and OS X Mavericks were first released.
The update fixes issues with the equalizer and performance when switching views in large libraries.
This version of iTunes resolves an issue where the equalizer may not work as expected and improves performance when switching views in large iTunes libraries. This update also includes additional minor bug fixes...
Read the full story here... Source: Mac Rumours