The next installer should be able to remove that IE entry as well, yes. Meanwhile, you could remove it with the small registry file I posted in another beta topic here, or with RunAlyzer, or with IEs integrated add-on management.

The next beta will be available as soon as I've debugged the TeaTimer 64 bit processes thing.

Meanwhile, we're nearly finished rewriting the whole immunization stuff, to be more consistent and to feature the following:
  • Firefox: Installations
  • Firefox: Popups
  • Firefox: Cookies
  • Firefox: Images
  • Opera: Plugins
  • Opera: Cookies
  • Opera: Popups
  • Opera: Content
  • IE: Cookies
  • IE: Domains
  • IE: IP ranges
  • IE: Plugins
  • Windows: Hosts
(Firefox means all Mozilla-type browsers actually, probably should rename it; IE means 32 and 64 bit, Opera means Opera 4 and newer, including 9)
Since this will use a new UI (which is not finished), I'm not sure if it will make it's way into the 1.5 immediately, but if not, I'll make a stand-alone test available. If you want to see more on this list, please let me know.