disconnecting as soon as it connects

[johnq]

iused pdanet for almost 5 months now , so far working good.. suddenly start getting disconnect but only when ibrowse youtube , idont undrstand why idid hard reset and #786#.set my multi nai to 0 . still getting disconnecting every time idownload file or upload file ,the only things that ican do just brawsing ie .
ichanged my mobile ip to preffer ,iused the new verison of pda 2.0 ,nothing work idont know what im missing . please help .