The batch-conversion dialog is useful, but once it's running, Irfanview obstructs the screen and clutters the alt-tab list, which is frustrating since it's the kind of thing you'll want to do in the background while doing other things. It might not matter if you're only processing a couple of files, but if you have to do a few hundred, then it becomes an issue, you'll want to keep using the computer while this runs. The batch feature needs a way to set the priority and minimize Irfanview to the taskbar and/or system-tray.
