Do I conclude correctly that maybe a 12/13/07 Windows Update placed this buggy file in my computer?
It seems that KB942615 has been causing some problems with IE6 users. I would uninstall it through add/remove programs in the control panel. This seems to fix other users' problems. I personally have IE7 installed on my computer and have that update installed with no problems so I suspect it to be only with IE6.
If you uninstall it but have your computer set to automatically install updates you will receive it again though
I would recommend going to start>settings>control panel>Automatic Updates> and enable "Notify me but do not automatically download and install them"
Each patch Tuesday (Monthly) you will be in control of your updates and when you do access the CUSTOM option you can choose just what you want to download and install.
When you go to Windows Updates next, you can hide the particular update KB924615 so it will not download and install again. Just follow the prompts once you are there.