Installed the latest version of Java, installed LW (basic) under Vista

When I start LW I cannot use or close the program however I can minimalize it with the "_". Harddisk is busy for about 10 min. when it stopped the situation didnt change.

I have already uninstalled (via windows-programs) and reinstalled al but that didnt work.

Does anyone has a solution for this ??

Thanks !!l