Je ne vois à la suite de quoi, il est devenu brutalement impossible pour moi de démarrer netbeans.

Voici la raison invoquée :

[herve@localhost bin]$ ./netbeans
#
# An unexpected error has been detected by Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xb3e996e3, pid=10913, tid=2991541136
#
# Java VM: Java HotSpot(TM) Client VM (10.0-b22 mixed mode, sharing linux-x86)
# Problematic frame:
# C [libX11.so.6+0x416e3] _XRead+0x33
#
# An error report file with more information is saved as:
# /home/herve/netbeans-6.1/bin/hs_err_pid10913.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
./../platform8/lib/nbexec: line 466: 10913 Abandon "/home/herve/java/jdk1.6.0_06/bin/java" -Djdk.home="/home/herve/java/jdk1.6.0_06" -classpath "/home/herve/netbeans-6.1/platform8/lib/boot.jar:/home/herve/netbeans-6.1/platform8/lib/org-openide-modules.jar:/home/herve/netbeans-6.1/platform8/lib/org-openide-util.jar:/home/herve/netbeans-6.1/platform8/lib/locale/boot_ja.jar:/home/herve/netbeans-6.1/platform8/lib/locale/boot_pt_BR.jar:/home/herve/netbeans-6.1/platform8/lib/locale/boot_zh_CN.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-modules_ja.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-modules_pt_BR.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-modules_zh_CN.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-util_ja.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-util_pt_BR.jar:/home/herve/netbeans-6.1/platform8/lib/locale/org-openide-util_zh_CN.jar:/home/herve/java/jdk1.6.0_06/lib/dt.jar:/home/herve/java/jdk1.6.0_06/lib/tools.jar" -Dnetbeans.dirs="/home/herve/netbeans-6.1/nb6.1:/home/herve/netbeans-6.1/ide9:/home/herve/netbeans-6.1/java2:/home/herve/netbeans-6.1/xml2:/home/herve/netbeans-6.1/apisupport1:/home/herve/netbeans-6.1/enterprise5:/home/herve/netbeans-6.1/profiler3:/home/herve/netbeans-6.1/gsf1:/home/herve/netbeans-6.1/visualweb2:/home/herve/netbeans-6.1/identity2:/home/herve/netbeans-6.1/harness:" -Dnetbeans.home="/home/herve/netbeans-6.1/platform8" '-Dnetbeans.importclass=org.netbeans.upgrade.AutoUpgrade' '-Dnetbeans.accept_license_class=org.netbeans.license.AcceptLicense' '-Xmx339m' '-Dorg.netbeans.modules.tomcat.autoregister.token=1215102183610' '-Dorg.netbeans.modules.tomcat.autoregister.catalinaHome=/home/herve/apache-tomcat-6.0.16' '-client' '-Xss2m' '-Xms32m' '-XXermSize=32m' '-XX:MaxPermSize=200m' '-Xverify:none' '-Dapple.laf.useScreenMenuBar=true' '-Dsun.java2d.noddraw=true' org.netbeans.Main --userdir "/home/herve/.netbeans/6.1" "--branding" "nb"
[herve@localhost bin]$
C'est à peu près la même chose en 6.1 et 6.5 beta.

Avez-vous une idée ?... merci.