about webot program

everybody, i downloaded the libwww package and compiled the program successfully. when i tried to 
use the webot program , i got some trouble. 

i started the webot to download a website. in the process, the network was broken down. at that time
the webot program entered a infinite loop and it didn't come back even though the network recovered. 

then i tried a simple experiment. i use the chunk program that is in the libwww sample program list.
i input a website address in the ip format like (172.20.52.29) as the argument to start the chunk 
program. and before, i run the program i pull out my network cable from computer so the network was 
break down. after i run the program , the program entered the infinite loop. and then i inputed a 
url (www.yahoo.com) that needed the dns analysis, the program dns timeout and exit .


i want to correct this bug, what should i do?
thanks !