Check if you don't have any scripts that set you to +d mode,
I don't know if the +d mode is a mIRC mode or a network mode, but it means Deaf mode. While in +d you will only see the mode changes, but no chat in the channel.
As i said, check to see if you dont have any scripts that set you +d after a certain idle time (use /!remote off to disable all scripts)
Zyzzyx.
