@evildictaitor: I know and it is still not changing the fact that IE's recoverability is unacceptable. From security, recover from hacking is just as crucial as closing the holes, and IE failed on recoverability. And in the end of it all, install Firefox again. I hate it. Everytime something bad happens on IE, I have to agree on install Firefox. I hate all the crappy justifications and problem is still not solved, and people HAVE to use Firefox. I keep promoting IE9, and in the end, still have to slap myself when it simply not useable for normal users.
I don't follow. If you've been hacked through Firefox, reinstalling Firefox does not remove the malware.
If you've been infected with malware, either run an anti-malware solution which will remove the malware from IE or Firefox without the need to uninstall, or (my preferred solution), blitz the entire OS which performs a defacto reinstall of IE and Firefox anyway.
From a security standpoint, not being able to reinstall IE doesn't make any difference, since if IE is infected, being able to reinstall it doesn't get rid of that infection.