Win 7 x64
Asus 1608P3S EIDE (flashed to Pioneer 111LabelFlash)
Recorded CD-R by ISO+Joliet session, checkboxes - verification + cycle tray + close program
Probably i taken CD-R out, later i found ImgBurn in infinite loop, it closed empty tray, and kept "Device not ready" waiting loop.
I'd insert media back, yet i could not. ImgBurn locked the tray and gave no button to eject it. So i had to cancel verification and... and that all, there is no way to resume verification after cancelling it.
I think there qwas no reason for ImgBurn to enter infinite loop there :-)