it sounds like your JVM in Internet Explorer has been corrupted. you need to go to Add/Remove programs and remove everything that looks like Sun Java or Java. then restart Windows. these include Java Web Start, Java Control Panel, and Java Runtime.
I'm using windows xp for longtime but recently i received this message "common client user section has encounter a problem and need to close" after closing the message and try to connect to internet i can not open any site which i normally go. pleased help me.