lately, while connnected to Undernet for a few minutes, i get this error msg:

MIRC caused an invalid page fault in
module MIRC.EXE at 017f:004edf60.
Registers:
EAX=0a7b9ae6 CS=017f EIP=004edf60 EFLGS=00010202
EBX=0081e178 SS=0187 ESP=0081c9dc EBP=0081e108
ECX=00000000 DS=0187 ESI=0081cb42 FS=0f5f
EDX=0081ca20 ES=0187 EDI=0081e158 GS=0000
Bytes at CS:EIP:
8a 18 84 db 0f 85 4b ff ff ff c6 45 00 00 5f 5e
Stack dump:
00000000 00000029 0081d5e8 0081e108 0000002a 0081ca20 004566ed 0081e108 00000180 00000000 00f60020 0081d5e8 00000002 00000001 00f60020 00000294

and i have to close the program, starting mirc again doesnt work. having this problem with 6.03 & 6.11
what should i do? thanks.

Read this and this.