Shoutbox

I use window live messenger + Messenger Plus, i open 2 account at the same time, but one account is always suddenly shut down automatically or after i send out the message , it will  apprear , can 't reach the receiver then shut down, re-connect or sometime, just down. please teach me how to solve it with thanks.

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and after shut down, said net messenger did not connect, then need re-connect it, but once i send message press enter, then will shut down, tried to uninstaill all, & instuall it again but still not work. please help me thanks.