what is buffer overflow?

in one of my failed burn logs it says this:

[00:51:49] DVDEngine **END: _DVDVideo - Create
[00:51:49] DVDEngine ########################################################################################
[00:51:49] DVDEngine ERROR
[00:51:49] DVDEngine cause: 128 (nmc_processing_exception)
[00:51:49] DVDEngine source: CDVDProcessor:rocessSector
[00:51:49] DVDEngine description: buffer overflow
[00:51:49] DVDEngine ########################################################################################
[00:51:49] DVDEngine END: IDVDVideoSessionImpl - CreateVOBs
[00:51:49] DVDEngine BEGIN: IDVDSessionBaseImpl - RegisterCallbac

what is buffer overflow? I read somewhere that my burner/laptop getting too hot could cause problems while burning?

 

Triple post, also here

http://forums.afterdawn.com/thread_view.cfm/367482