We are from the Java Studio Enterprise team, and our latest product JSE8 (with early access next week, ie burn the CD for shipment next week). We have found a serious performace issue on Solaris with latest hardware like

Solaris 10 on Sunblade 1500 & 2500
Solaris 10 x86
JDS platform

The scenario used is the most common usecase that our customer will use.

1. Install JSE8 IDE from "/net/balui.sfbay/kits/oriondev/main/Build050803_28/installers/"
2. Open the IDE after install
3. Create a UML diagram (Click File->New Project, Select UML project)
Note: Our QA can help you setup and show the scenario
4. Create a UML diagramby clikcing on the Diagram node on the Project Tab (left side of IDE)
5. Try dragging an element (like Class) from right side pallette. Repeat this. After a while >5 you will see slow response.

We took process stack trace during slow response

====================================
fe941208 __1cNObjectMonitorFenter6MpnGThread__v_ (139b38, 471c80, 134, 0, f8cc0a10, 46a4f8) + 8
 feb1bd58 __1cSObjectSynchronizerJjni_enter6FnGHandle_pnGThread__v_ (dfefd7fc, 471c80, 1, 1, 759c, fefd79a4) + 25c
 feb1f9e0 jni_MonitorEnter (6000, 48c110, 471c80, fefd835c, fefccaf8, fef86000) + 2b0
 fa8a76b4 ???????? (471d38, a87288, dfefd8e0, 2, 0, 49480) + fffffffffbd87f84
 e0af5e70 Java_sun_awt_image_DataBufferNative_setElem (471d38, dfefd9b8, 11c, 134, d69a, dfefd9b4) + 48
 f8bfcc9c * *sun/awt/image/DataBufferNative.setElem(IIILsun/java2d/SurfaceData;)V+0
 f8c78694 * sun/java2d/pipe/RegionSpanIterator.getPathBox([I)V+-12480
 f8bfd00c * *java/awt/image/SinglePixelPackedSampleModel.setDataElements(IILjava/lang/Object;Ljava/awt/image/DataBuffer;)V+131 (line 605)
 f8cb9330 * *java/awt/image/WritableRaster.setDataElements(IILjava/lang/Object;)V+21 (line 268)
 f8cc0a10 * *sun/java2d/loops/OpaqueCopyArgbToAny.Blit(Lsun/java2d/SurfaceData;Lsun/java2d/SurfaceData;Ljava/awt/Composite;Lsun/java2d/pipe/Region;IIIIII)V+231 (line 167)
 f8c97ab4 * I2CAdapter
======================================

Also see attached logs of stack traces