I'm using windows xp home, and I am having the same problem. At 12% a window pops up asking me to make some selections regarding where the dl's go and what is shared, followed by a screen with three options; begin at startup, filter on/off, and something else. After I close that second option screen nothing happens. I've been working on this now for hours, going through the forums and I can't fix it.

I have
uninstalled all Java and then installed the newest version using the offlline installer.
uninstalled LW and reinstalled three times now, using the online and offline installers.
and nothing. Please help.