I'm by far no expert, but it seems it's a Java bug and by suggesting to people to roll back to the JRE 5.11 seems to be the most logical answer at the moment...
01din...
Delete the .Limewire folder and then re-start and delete the LimeWire folder...
That Java link works fine ?? and the 5th one down is for the JRE (Java Runtime Enviroment) 5.11...