@Bristol_Jonesey
Your confidence was so great I just tried it to make sure I wasn't mistaken.
The project has 11 24 bit tracks and is 2 hours and 55 minutes long (a little more). I selected all tracks. Alt>P>N to normalize and hit OK. It wouldn't do anything if it worked anyway since there are normalized moments in all tracks. Then I hit escape.
The screen went ghost ish (I could see but couldn't click and everything is a lighter color) for 6.5 minutes
I use Windows 8 x64 and Sonar Prod X2 X64 but this was true on my system for X1 and Windows 7 as well.
I use a fast track ultra interface (m-audio) in asio mode.
When the Escape hitting finally took effect, I got this message...
The error reads File write failed... path... edit(25).wav.
Component Details Subscore Base score
Processor Intel(R) Core(TM)2 Duo CPU T9600 @ 2.80GHz 6.4 3.3
Determined by lowest subscore
Memory (RAM) 4.00 GB 6.4
Graphics NVIDIA GeForce 9200M GS 3.3
Gaming graphics 2031 MB Total available graphics memory 5.0
Primary hard disk 34GB Free (149GB Total) 5.2
Windows 8 Enterprise