Hi, my name is [R]u[F]y.
I have found this bug. I have mIRC 6.12, Windows ME, Zone Alarm, Internet Explorer 6.0.2800.1106.
When i open mIRC (mIRC is not connected), and my browser is opened, the command //echo -a $url will return me the html page, but if i close my Browser and retype that command, mIRC Freeze.