Hi On Vista64 if you are burning multiple copies and you cancel the burning between disks the program hangs. It does not shows as "not responding" on task manager but it just stays there forever with the message "Abort burning process, please wait...". Pressing cancel several times does nothing, you have to kill the process from Task Manager. I have reproduced the problem several times. I have attached a picture of the dialog. I am using v184.108.40.2060 I should also inform that CDB-XP respects the burning speed selection just for the first copy in a multiple copy burning, subsequent copies are burned always at max speed, in my case 48X, even if the selected burning speed was 32X. Hope this can be corrected. Thanks.