This update addresses several issues with underlying frameworks and shared components for Apples professional applications and is strongly recommended for all users of:
Final Cut Studio 5.1
Final Cut Pro 5.1
Soundtrack Pro 1.1
DVD Studio Pro 4.1
Apple Qmaster 2.1
Final Cut Express HD 3.5
Also released today was Final Cut Pro 5.1.2.
Final Cut Pro Update 5.1.2 provides important bug fixes and compatibility updates for certain Canon, Sony, JVC and Panasonic devices. This update is recommended for all Final Cut Pro 5.1 and Final Cut Pro 5.1.1 customers.