System information

MRJ DataTransfer (com.apple.mrj.datatransfer) is deprecated in Jaguar. (r. 2905002).

MRJ console (com.apple.mrj.console) has been deprecated in Jaguar. (r. 2905006).

Java VM

Java Virtual Machine used in Mac OS X.

HotSpot used to ignore the ThreadStackSize=n JVM setting, now it handles it properly. (r. 2913774).

JVM used to truncate an invoking thread's stack size to 512K, it now leaves the invoking stack size alone. (r.

2941848).

The Java SDK now contains all Sun changes for 1.3.1_03. (r. 2895871).

Launch Services

Launch Services provides APIs applications can use for launching other applications.

LaunchServices is now thread safe. (r. 2896505).

Local applications on hard drives are now launched before identical copies of the same application found on CD

drives. (r. 2815028).

A problem where local programs were not being given preference at document-opening time over server

application has been corrected. Now, a local copy of an app takes priority over a copy with the same version

number located on a network volume. A higher version number will trump the local copy, but in that case you can

set a preference for the local copy using the Finder's Info Window. (r. 2645865).

The kLSLaunchDontSwitch flag is now respected when using LSOpenFromURLSpec. Previously, this flag was

ignored. (r. 2755764).

MIME info can now appear in application plists along side CFBundleTypeExtensions and CFBundleTypeOSTypes to

identify files an application is capable of displaying or editing by MIME type. The MIME key is

CFBundleTypeMIMETypes. (r. 2722760).

The new LaunchServices APIs, LSCopyKindStringForTypeInfo() and LSCopyKindStringForMIMEType(), were added

to allow callers to retrieve kind strings of non-existent files. (r. 2696767).

Previous 1K restriction to the length of URLs that can be passed to Launch Services have been removed. Now URLs

can be of any size. .

Mach Kernel

The complete Mac OS X core operating system environment that includes Mach, BSD, the I/O Kit, file systems, and

networking components.

Fixed a subtle bug in IOCatalogue where, if IOCatalogue was asked to add a new personality, it would compare the

personality against all those it knows, but would check only the keys of the dictionaries already present. This could

lead to a case where adding a new personality that is a superset of an existing one would cause the existing one to be

dropped as a duplicate. (r. 2928968).

When Safe Booting (shift key down), ignore I/O Kit personalities with the IOKitDebug property. This is to allow

developers to bypass loading a panic()ing boot-time kext. (r. 2864324). (r. 2920410).

sprintf and snprintf now support quad-ints (%qd, %qu, %qx, etc). (r. 2917340).

kextload now does full authentication by default, and only allows the invoker to skip authentication if the kext is not

being loaded (as with -n). (r. 2906248).

New commands kextload, kextunload, and kextcache obsolete kmodload/kmodsyms, kmodunload, kmodsyms, and

mkextcache.(r. 2875218, 2875215, 2899022) (r. 2898582).

Kext loading now passes through dependencies on kexts with no binary directly to the next kext that does have a