now then ..strange but see which of the things youre having..
1. if youre on DALnet ( it has been having loads of problems network lagg splits and everything . so you dont have to worry it will be alright , so then try another network and see if same things are happening.)
2. if you got any scripts on your client turn them off /remote off and /perform off
3. update to the latest mirc version from
here to reduce the chances even more .