How to avoid site shut down because of QUICKfind BHO Object?

I noticed that my site and many other websites can't load in Internet Explorer 6,7,8 ! For some reason when QuickFind BHO / IEHelp.dll is enabled in the browser the browser simply starts to load but shuts it down with an error!

Now I can't find anything on google about this others than a few people tell to disable this plugin, which is what I did too.

BUT, I assume the majority of users don't know how to do this and just surfe to the next site, how much traffic lost this brings I can't even imagine...

Anyone know what part of a website is triggering this error ?