1) This should've been posted as a new topic, not as a reply.
2) Issue the command /!remote off
2a) Does the problem still exist with your remotes turned off?
3) What version of Windows are you running?
4) What version of mIRC?
5) How much RAM?
6) What's your processing speed?
7) How much free space on your hard drive?
8) What other programs are you running at the same time?