I'm having this same problem. It just started happening today.

1.Windows XP

2.Windows Firewall

3. 2 GB ram

4. 40 GB HD available

5.Satellite internet connection (low-end broadband)

6.Linksys router BEFW11S4, HughesNet DW7000 modem

7.Connecting from house

8.LW- 4.12.11, Java- 1.6.0_01

9.HughesNet

10.Your test worked!

11.Shared with one other computer that's not downloading

12.New problem

13.Yes

14.Port Forwarded

15.Just windows firewall

16. USA

Thanks for any help.