I have a pc win 7 that I use exclusively for ejukebox and since I intalled the 5.80 update the same thing happens half of the time. When ejukebox starts, everything but the wallpaper disapear, the music still plays ,I have no more icon on my desktop, no mouse pointer, alt-ctrl-del doesn't work anymore, the only thing I can do is push power on my pc. It happened once also when the program was already running.

I think that the problem is explorer.exe crash....

I think I might have found the problem, I just need to wait to see if it will happen again. I was using a double display setup when I unplug the second display, the problem seems to stop.