frequently dropping connection
 

i have limewire 4.2.6 on winxp sp1. i have a 128k connection with a usb modem. my problem is that i can connect and download stuff normally at first. but if i leave the computer untouched for , say 1 hour, all the connections are dropped. even the downloads are stopped and they show 'need more sources'.

in the previous version of limewire, everything was running smoothly and i could stay connected for almost 12 hrs without any drop. what is the problem, and how can it be solved. and btw, im using jre 1.5

thanks