Not that I'm aware of.
Maybe it was a one-off thing? I can't be sure of that, though.
So I thought I might as well mention it.
*edit*
While stumbling through the Event Viewer:
Faulting application mirc.exe, version 7.25.0.0, faulting module unknown, version 0.0.0.0, fault address 0x00290fb4.
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.