bro teikwing , i'm having the same problem like u after flash my buffalo G54S to ddwrt v2.3SP2, the streamyx disconnect every few hours, then reconnect back. i'm sure no my line problem cause yesterday i try direct connect modem and dial-up then bt for around 24hours it didn't disconnect. but tis morning connect using the router and i back to office check my DDNS account it change the ip almost every hour.....