I've got an old powerbook but I have 10.4.8 on it and the updated Java. I thought I would have a go at downloading LW onto this and am coming up against the same problems.
Does this mean it is happening to many of us? I have just downloaded the 1st new address and I got the same thing, it opened up but nothing came into the main window. Because I am having the same trouble on 2 computers I feel it might be something I am not doing. I feel it might be the firewall is there anyway I can send you screenshots?