jave fatel error

i keep getting fatel error that says several java runtimes are running and wont connect. what can i do about this ? i have reinstalled and thats not working.
[164 byte] By [raynwinds6a] at [2007-11-26 15:35:06]
# 1
One thread is sufficient: http://forum.java.sun.com/thread.jspa?threadID=5126504
CeciNEstPasUnProgrammeura at 2007-7-8 21:52:33 > top of Java-index,Java Essentials,New To Java...