A few things:
1) Please do not cross post. It causes confusion amongst people if several people are helping on the boards at the same time. It's also likely to get you flame replies and it's unnecessary.
2) I've moved this thread to the 'mIRC Help' forum where you originally posted, I was a bit hasty with the ole' delete button.
3) milosh suggested in one of your other threads that it may occur if you're using a dial-up connection.