after the 'IE stopped working' pop-up i started to get a blue screen message on my Vista: "Problem detected...Windows has shut down to prevent damage to your computer". This was becoming regular so i stopped using IE and went through my server, now i got exactly the same blue screen not using IE so the pc has melt down
the blue screen tells me i might like to start in Safe Mode and disable Bios memory options and gives me various 'technical information such as "STOP 0x00000116 nvlddmkm.sys"
the pc then tries to restart itself but fails and goes into blue screen again
Failing hardware will cause any/all applications and OS's to crash. If IE is the only thing to crash, it's possible a third-party application or plug-in is at fault and uninstalling that third-party software is the solution.
I'm not familar with posts about IE and McAfee issues. If you could post some links, maybe I could get a better idea. Usually the problem isn't an IE/McAfee problem at all. Your symptoms also support this as not being an IE problem.
My general fix for IE is to first disable third party addons (Internet Explorer's Safe Mode or Internet Options -> Advanced -> Uncheck "Enabled Third-Party Browser Extensions" and restart). For broken IE components, a reinstall of the same IE version or upgrade usually fixes any issues.