I think this should help you
Make sure that the Java web plugin is set to the latest version
First open you control panel
then select other control panel options on the left of your screen
Then select Java Plug-in
Then click the Advanced tab on the top
Make sure that JRE 1.4.2_04 is selected
Then click Apply
That should help you
it seems to want to use the previous version after installing the newest java
My downloads were horrible until I found this solution
Windows XP
516 Mb of Ram
Running Limewire Version 4.0.5