my friend keep disconnecting from my server

[muthafutha01]

my friend keep disconnecting from my server it says internal exception:java.net.socketTimeoutException:read timed out when he disconnects. it happen for 2 days now it was fine before. i downgrade minecraft to 1.2.3 to make hack/mine server maybe thats why my friend is disconnecting

HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[Jay?]

Fun fact, you did every single thing wrong.

All of the things. All of them. take 3 days off and try again.