[Virus]

If you use the windows console. This might be your problem. I haven't used the GUI client, so I don't know if it has the same problem.

If you click anywhere inside of the console window. 'Select' will appear beside the window title. When it's in this mode. It doesn't update the window, and the client will stop and wait for the window to get out of 'Select' mode. To get it back to normal, press 'Enter'. This wonderful feature makes me wish I had a billg voodoo doll to take my anger out on.