While 'burning' an .iso image to a usb drive, the desktop is intermittently unresponsive.
While the dd process is ongoing, I'm trying to perform other tasks, but sometimes the desktop is completely unresponsive to my commands (e.g. switching application, bringing up another window...); the system appears to be completely frozen and I have to wait about 1 minute before the system comes back up again. When the dd process has completed (10~15 minutes to burn a 2.2Gb .iso file), everything comes back to normal, so it's not something critical.
