No CPU usage is never above 10% while burning, only when the buffers raise again will the cpu usage spike. When I did a fresh install IMGBURN was one of the first things I installed and it burnt 2 things fine with no issues what-so-ever. After keeping the laptop shutdown for a few hours and booting back up to burn a few more discs it started giving me the issue again.
Log from latest burn:
; //****************************************\\
; ImgBurn Version 2.4.2.0 - Log
; Monday, 27 October 2008, 18:36:40
; \\****************************************//
;
;
I 18:36:28 ImgBurn Version 2.4.2.0 started!
I 18:36:28 Microsoft Windows Vista Ultimate Edition (6.0, Build 6001 : Service Pack 1)
I 18:36:28 Total Physical Memory: 3,143,360 KB - Available: 2,283,952 KB
I 18:36:28 Initialising SPTI...
I 18:36:28 Searching for SCSI / ATAPI devices...
I 18:36:28 Found 1 DVD