Problem with www protocol when srcds working

[r00lz]

Hello. My problem: when i run srcds www protocol like suspend(www sites doent load, like srcds overflow my internet), but only www(ftp, skype other protocols works fine) I'm have LAN connection with 5 users.
Lan Sharing running on Smoothwall Linux
SRCDS running on win2k3(tested on XP too)
Help !!!!    Sorry for bad english
                                            r00lz