This morning, Apple posted an update to OSX Leopard to 10.5.3. Run the software update to get the newest version. Apple has posted information on this update.
There are a lot of issues fixed for this update. If you use a USB audio or video device, this will fix any stuttering issues. Another big issue it fixes, certain hard drives that didn’t, will show up in Finder.
For those of you who connect up your Mac to Active Directory, this fix will improve binding and logon. It also fixes a delay people were reporting when logging in a .local domain. Most importantly, you should now be able to change your password at the login window if you are using a Mac OSX 10.4 Open Directory Server.
The update will also help those who use AirPort and Time Capsule. Other updates are with iCal, iChat, Mail, Spaces, Parental Controls and VoiceOver.
No word yet on if it will help anyone running Hackintosh. Of course if you do try the upgrade, make sure you have your system properly backed up.