jdk: /net/spb-cyclops/export/IntegrationBuilds/7/2009-04-27-042403.ss145989.jdk7-swing-pit-with-awt/

reg test: closed/java/awt/ScrollPane/RemoveChild/ fail on sles and rhel5 x86 on jdk7b57_awt_swing_pit

It fails on jdk 7 b53 too.

jstack log attached(ScrollPaneRemoveAdd.jstack).

How to reproduce.(Not always reproduced 90%)
1 Login to computer
2 cd /tmp/tempresults
3 export DISPLAY=:0
4 xhost +
5 jct-tools3.1.2/linux/bin/jtreg -jdk:/export/jdk/jdk1.7.0_pit_b57/ -verbose:all test/closed/java/awt/ScrollPane/RemoveChild/ -automatic -timeout:15

Found one Java-level deadlock:
=============================
"Thread-2":
  waiting for ownable synchronizer 0xb333a7f0, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),
  which is held by "AWT-XAWT"
"AWT-XAWT":
  waiting to lock monitor 0x082150b8 (object 0xb33d99b0, a sun.awt.X11.XToolkit),
  which is held by "AppletThread"
"AppletThread":
  waiting for ownable synchronizer 0xb333a7f0, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),
  which is held by "AWT-XAWT"

A few tests fails with similar stack. Also attached:
jstack_16318
jstack_18898
jstack_19816
jstack_2539