I'll take you on those offers.
1. Post the place which will plant something via firefox. I'm calling you on this one partially because I know that M$ tends to brainwash their people, and partially because I'd like to see for myself if its true.
2. "Very big flaw"? I read all the IT stuff, from /. to Sharktank. I must confess that I haven't heard of it. I know that there was one last July that was quickly patched; ironically, that was during the M$ Partner Conference, and it was mentioned in every sales session! Again, I'm calling you on this one because I'm not sure if you just have drunk too much M$ koolaid, or if its really true.
Browse around grc.com (Gibson Research) and you'll find tests that will poke holes in any browser. I use Firefox and have tried them and when not running a firewall, Firefox hasn't been able to stop grc.com from obtaining plenty of info on my browser.
hehe ok:
1. http://cool-search.biz/traf/30955/in.html <--- this is the URL that will install software if you are running firefox. If you have a new version of norton it will pick up all the nasty things it wants to install (notice, firefox says nothing). If you have norton, disable it, and check out your task manager and Hard Drive light when you go to this URL. After, use a spyware program to remove all the spyware it installed on your computer.