Were you using the online (recommended) installer? You're better off with the offline one - fewer corrupt installations

So...first of all, download Java & use the JRE offline installer here
http://java.sun.com/javase/downloads/index_jdk5.jsp
Remove your current Java version before you install the new one.

Now download LW & make sure to use the offline installer
http://www.limewire.com/english/content/download.shtml