This is with -g -classic running the latest promoted build (38).
I got a crash doing the same thing with hotspot in the integration build.
I was playing with the JCombo box in the color column of the
JTable demo - selecting and scrolling the JCombobox. Took less than
thirty seconds to crash each time.

Running on Solaris sparc 2.8 (awt-lab-02, an Ultra-1) and remotely displaying
to Solaris sparc 2.7 (gradgrind, an Ultra 10)

Using Motif 1.2 vs. 2.1 does not seem to affect it.

[preceding debug printlns about fonts elided]

/usr/openwin/lib/X11/fonts/TrueType/Arial-Bold.ttf - CMAP 3,1 found at offset 282.
/usr/openwin/lib/X11/fonts/TrueType/Arial.ttf - CMAP 3,1 found at offset 282.
/usr/openwin/lib/X11/fonts/TrueType/TimesNewRoman.ttf - CMAP 3,1 found at offset 282.
SIGSEGV 11* segmentation violation
    si_signo [11]: SIGSEGV 11* segmentation violation
    si_errno [0]: Error 0
    si_code [1]: SEGV_MAPERR [addr: 0x8]

        stackpointer=fea028e0

Full thread dump Classic VM (1.4.0beta-b38, native threads):
    "Thread-1" (TID:0xfb0b4500, sys_thread_t:0x27548, state:CW, native ID:0x1) prio=5
    "TimerQueue" (TID:0xfb06bc50, sys_thread_t:0x74fd08, state:CW, native ID:0xe) prio=5
        at java.lang.Object.wait(Native Method)
        at javax.swing.TimerQueue.run(TimerQueue.java:234)
        at java.lang.Thread.run(Thread.java:488)
    "AWT-EventQueue-0" (TID:0xfb0bfa48, sys_thread_t:0x41cc60, state:CW, native ID:0xd) prio=6
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at java.awt.EventQueue.getNextEvent(EventQueue.java:309)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:131)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:122)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:118)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
    "AWT-Shutdown" (TID:0xfb0c02d8, sys_thread_t:0x413b18, state:CW, native ID:0xc) prio=5
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:262)
        at java.lang.Thread.run(Thread.java:488)
    "AWT-Motif" (TID:0xfb0a6828, sys_thread_t:0x2d9130, state:R, native ID:0x8) prio=5
        at sun.awt.motif.MToolkit.run(Native Method)
        at java.lang.Thread.run(Thread.java:488)
    "Finalizer" (TID:0xfb098530, sys_thread_t:0x77f40, state:CW, native ID:0x6) prio=8
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:126)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:162)
    "Reference Handler" (TID:0xfb098300, sys_thread_t:0x6da50, state:CW, native ID:0x5) prio=10
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:110)
    "Signal dispatcher" (TID:0xfb098330, sys_thread_t:0x6b9d0, state:CW, native ID:0x4) prio=5
Monitor Cache Dump:
    java.lang.Class@FB0AADE8/FB11E630: owner "AWT-Motif" (0x2d9130) 1 entry
    java.lang.ref.ReferenceQueue$Lock@FB098548/FB0CE9E8: <unowned>
        Waiting to be notified:
            "Finalizer" (0x77f40)
    javax.swing.TimerQueue@FB06BC70/FB1D3138: <unowned>
        Waiting to be notified:
            "TimerQueue" (0x74fd08)
    java.awt.EventQueue@FB0A6CF8/FB179260: <unowned>
        Waiting to be notified:
            "AWT-EventQueue-0" (0x41cc60)
    java.lang.ref.Reference$Lock@FB098310/FB0CE498: <unowned>
        Waiting to be notified:
            "Reference Handler" (0x6da50)
    java.lang.Object@FB0AA8D8/FB11CF60: <unowned>
        Waiting to be notified:
            "AWT-Shutdown" (0x413b18)
Registered Monitor Dump:
    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" (0x2d9130) 1 entry
    Thread queue lock: owner "AWT-Motif" (0x2d9130) 1 entry
        Waiting to be notified:
            "Thread-1" (0x27548)
    Monitor registry: owner "AWT-Motif" (0x2d9130) 1 entry

SIGABRT 6* abort (generated by abort(3) routine)
    si_signo [6]: SIGABRT 6* abort (generated by abort(3) routine)
    si_errno [0]: Error 0
    si_code [-1]: SI_LWP [pid: 4654, uid: 38734]
        stackpointer=fea01ef0

Full thread dump Classic VM (1.4.0beta-b38, native threads):
    "Thread-1" (TID:0xfb0b4500, sys_thread_t:0x27548, state:CW, native ID:0x1) prio=5
    "TimerQueue" (TID:0xfb06bc50, sys_thread_t:0x74fd08, state:CW, native ID:0xe) prio=5
        at java.lang.Object.wait(Native Method)
        at javax.swing.TimerQueue.run(TimerQueue.java:234)
        at java.lang.Thread.run(Thread.java:488)
    "AWT-EventQueue-0" (TID:0xfb0bfa48, sys_thread_t:0x41cc60, state:CW, native ID:0xd) prio=6
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at java.awt.EventQueue.getNextEvent(EventQueue.java:309)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:131)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:122)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:118)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
    "AWT-Shutdown" (TID:0xfb0c02d8, sys_thread_t:0x413b18, state:CW, native ID:0xc) prio=5
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:262)
        at java.lang.Thread.run(Thread.java:488)
    "AWT-Motif" (TID:0xfb0a6828, sys_thread_t:0x2d9130, state:R, native ID:0x8) prio=5
        at sun.awt.motif.MToolkit.run(Native Method)
        at java.lang.Thread.run(Thread.java:488)
    "Finalizer" (TID:0xfb098530, sys_thread_t:0x77f40, state:CW, native ID:0x6) prio=8
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:126)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:162)
    "Reference Handler" (TID:0xfb098300, sys_thread_t:0x6da50, state:CW, native ID:0x5) prio=10
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:425)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:110)
    "Signal dispatcher" (TID:0xfb098330, sys_thread_t:0x6b9d0, state:CW, native ID:0x4) prio=5
Monitor Cache Dump:
    java.lang.Class@FB0AADE8/FB11E630: owner "AWT-Motif" (0x2d9130) 1 entry
    java.lang.ref.ReferenceQueue$Lock@FB098548/FB0CE9E8: <unowned>
        Waiting to be notified:
            "Finalizer" (0x77f40)
    javax.swing.TimerQueue@FB06BC70/FB1D3138: <unowned>
        Waiting to be notified:
            "TimerQueue" (0x74fd08)
    java.awt.EventQueue@FB0A6CF8/FB179260: <unowned>
        Waiting to be notified:
            "AWT-EventQueue-0" (0x41cc60)
    java.lang.ref.Reference$Lock@FB098310/FB0CE498: <unowned>
        Waiting to be notified:
            "Reference Handler" (0x6da50)
    java.lang.Object@FB0AA8D8/FB11CF60: <unowned>
        Waiting to be notified:
            "AWT-Shutdown" (0x413b18)
Registered Monitor Dump:
    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" (0x2d9130) 1 entry
    Thread queue lock: owner "AWT-Motif" (0x2d9130) 1 entry
        Waiting to be notified:
            "Thread-1" (0x27548)
    Monitor registry: owner "AWT-Motif" (0x2d9130) 1 entry

/java/jdk/bin/jdkx[12]: 4654 Abort
echawkes@awt-lab-02:/net/jano/export/disk03/awt/integration-build( 56 )%