After upgrading my Linux kernel from 2.2.0pre7 to 2.2.0pre9 (aka 2.2.0-final), native threads are broken. All complex multithreaded applications (AWT & Swing apps especially) crash within a few seconds of start up. Green threads are not effected. Reverting to 2.2.0pre7 removes the problem. Can anyone else confirm this? [bryce@p2-bryce bin]$ ./Together.sh SIGSEGV 11* segmentation violation stackbase=BFFFF640, stackpointer=BFFFF270 Full thread dump: "SIGQUIT handler" (TID:0x418f32a0, sys_thread_t:0x8216e80, state:R, thread_t: t@2050, sp:0x64656d72 threadID:0x30d, stack_base:0xbf7ffd68, stack_size:0x200000) prio=5 "Finalizer thread" (TID:0x418f3088, sys_thread_t:0x8216df8, state:CW, thread_t: t@1025, sp:0x64656d72 threadID:0x30c, stack_base:0xbf9ffd68, stack_size:0x200000) prio=5 "main" (TID:0x418f30b0, sys_thread_t:0x8207108, state:R, thread_t: t@1024, sp:0xbfffeadc threadID:0x2e1, stack_base:0xbffff640, stack_size:0x200000) prio=0 *current thread* java.util.zip.ZipFile.readCEN(ZipFile.java) java.util.zip.ZipFile.<init>(ZipFile.java) oisoft.together.z7.z110.getZipFile(z110.java) oisoft.together.z7.z100.getInstance(z100.java) oisoft.together.z7.z97.nextElement(z97.java) oisoft.together.z7.z98.getContainingEntry(z98.java) oisoft.together.z7.z102.getContainingPathEntry(z102.java) oisoft.together.z7.z102.getContainingPathEntry(z102.java) oisoft.together.z7.z102.defaultHome(z102.java) oisoft.together.z7.z102.instance(z102.java) oisoft.together.z7.z102.defaultHome(z102.java) oisoft.together.z4.z1.z32.loadConfig(z32.java) oisoft.together.z4.z1.z32.parseCommandLine(z32.java) oisoft.together.z8.<init>(z8.java) oisoft.together.Main.main(main.java) Monitor Cache Dump: Registered Monitor Dump: Thread queue lock: owner "main" (0x8207108, 2 entries) Name and type hash table lock: <unowned> String intern lock: owner "main" (0x8207108, 1 entry) JNI pinning lock: <unowned> JNI global reference lock: owner "main" (0x8207108, 1 entry) BinClass lock: owner "main" (0x8207108, 1 entry) Class loading lock: <unowned> Java stack lock: <unowned> Code rewrite lock: <unowned> Heap lock: owner "main" (0x8207108, 1 entry) Has finalization queue lock: owner "main" (0x8207108, 1 entry) Finalize me queue lock: owner "main" (0x8207108, 1 entry) Waiting to be notified: "Finalizer thread" (0x8216df8) Monitor registry: owner "main" (0x8207108, 1 entry) Aborted [bryce@p2-bryce bin]$ rpm -q glibc glibc-2.0.7-29 regards [ bryce ]