internet connection not responding..

it happen almost every time after i burn a cd,my internet connection is disable and ican't surf or use my messenger or anything,and i l have to say that im not disconected or somthing, the internet communiction box show's that im connected,but nothing really happening,only if restart the windows evrething going back to normal
???????
i have:
adsl
modem samsung
windows xp pro
p4 3.ghz
1g ram