Drag and Drop can randomly fail and SEGV on non RH 6.0 and even sometimes
Redhat 6.0 machines.

starting Drag
method unknown (eip = 445b6bb7)
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Success
    si_code [0]: SI_USER [pid: 0, uid: 0]
 stackpointer=0x449aa918

Full thread dump Classic VM (1.2.2-I, green threads):
    "Screen Updater" (TID:0x40eb07c8, sys_thread_t:0x843e520, state:CW) prio=4

 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java, Compiled Code)
 at sun.awt.ScreenUpdater.nextEntry(ScreenUpdater.java, Compiled Code)
 at sun.awt.ScreenUpdater.run(ScreenUpdater.java:99)
    "Image Fetcher 3" (TID:0x40eb4de8, sys_thread_t:0x8383d70, state:CW)
prio=8
 at java.lang.Object.wait(Native Method)
 at sun.awt.image.ImageFetcher.nextImage(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.run(ImageFetcher.java, Compiled Code)
    "Image Fetcher 2" (TID:0x40eb5388, sys_thread_t:0x837c808, state:CW)
prio=8
 at java.lang.Object.wait(Native Method)
 at sun.awt.image.ImageFetcher.nextImage(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.run(ImageFetcher.java, Compiled Code)
    "Image Fetcher 1" (TID:0x40eb6eb8, sys_thread_t:0x8362918, state:CW)
prio=8
 at java.lang.Object.wait(Native Method)
 at sun.awt.image.ImageFetcher.nextImage(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.run(ImageFetcher.java, Compiled Code)
    "Image Fetcher 0" (TID:0x40eb7050, sys_thread_t:0x831e690, state:CW)
prio=8
 at java.lang.Object.wait(Native Method)
 at sun.awt.image.ImageFetcher.nextImage(ImageFetcher.java, Compiled Code)
 at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:216)
 at sun.awt.image.ImageFetcher.run(ImageFetcher.java:189)
    "AWT-Motif" (TID:0x40eb8568, sys_thread_t:0x82e6e18, state:R) prio=5
 at sun.awt.motif.MToolkit.run(Native Method)
 at java.lang.Thread.run(Thread.java:479)
    "SunToolkit.PostEventQueue-0" (TID:0x40eb89d0, sys_thread_t:0x82c5600,
state:CW) prio=5
 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java, Compiled Code)
 at sun.awt.PostEventQueue.run(SunToolkit.java:413)
    "AWT-EventQueue-0" (TID:0x40eb89a0, sys_thread_t:0x82bdc40, state:MW)
prio=6
 at sun.awt.motif.MComponentPeer.nativeHandleEvent(Native Method)
 at sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java, Compiled
Code)
 at java.awt.Component.dispatchEventImpl(Component.java, Compiled Code)
 at java.awt.Component.dispatchEvent(Component.java, Compiled Code)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:287)
 at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:101)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:92)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:83)
    "Finalizer" (TID:0x40e9c320, sys_thread_t:0x8107fe8, state:CW) prio=8
 at java.lang.Object.wait(Native Method)
 at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java, Compiled Code)
 at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java, Compiled Code)
 at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
    "Reference Handler" (TID:0x40e9c3b0, sys_thread_t:0x8103298, state:CW)
prio=10
 at java.lang.Object.wait(Native Method)
 at java.lang.Object.wait(Object.java, Compiled Code)
 at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:114)
    "Signal dispatcher" (TID:0x40e9c3e0, sys_thread_t:0x81013e0, state:CW)
prio=5
    "Thread-0" (TID:0x40eb0300, sys_thread_t:0x804c3b0, state:CW) prio=5
Monitor Cache Dump:
    java.util.Vector@40EB7020/40F17200: <unowned>
 Waiting to be notified:
     "Image Fetcher 0" (0x831e690)
     "Image Fetcher 1" (0x8362918)
     "Image Fetcher 3" (0x8383d70)
     "Image Fetcher 2" (0x837c808)
    java.lang.ref.ReferenceQueue$Lock@40E9C338/40ED1D60: <unowned>
 Waiting to be notified:
     "Finalizer" (0x8107fe8)
    sun.awt.ScreenUpdater@40EB07C8/40F6B238: <unowned>
 Waiting to be notified:
     "Screen Updater" (0x843e520)
    java.lang.Class@40EAE220/40F147F0: owner "AWT-Motif" (0x82e6e18) 1 entry
 Waiting to enter:
     "AWT-EventQueue-0" (0x82bdc40)
    sun.awt.PostEventQueue@40EB89D0/40EF8698: <unowned>
 Waiting to be notified:
     "SunToolkit.PostEventQueue-0" (0x82c5600)
    java.lang.ref.Reference$Lock@40E9C3C0/40ED1890: <unowned>
 Waiting to be notified:
     "Reference Handler" (0x8103298)
Registered Monitor Dump:
    Invoker change lock: <unowned>
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    System class loader lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache lock: owner "AWT-Motif" (0x82e6e18) 1 entry
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
 Waiting to be notified:
     "Signal dispatcher" (0x81013e0)
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
 Waiting to be notified:
     <unknown thread> (0x8057818)
    Thread queue lock: owner "AWT-Motif" (0x82e6e18) 1 entry
 Waiting to be notified:
     "Thread-0" (0x804c3b0)
    Monitor registry: owner "AWT-Motif" (0x82e6e18) 1 entry