Fraxinus.. To order to remove KB891711, the MS tech had me boot into safe mode and use add/remove in settings to delete it from my system. The KB888113 patch doesn't seem to be problematic for me. Just deny the updates for KB891711 from being installed in the future.
You didn't mention if you're running proxomitron or some other ad-killing program but in my case proxo was positively conflicting with the KB891711.exe. Still no word back from MS yet...
I remove the KB891711 just by doing a restore of the "system checkpoint": "update windows v 4". This restore point is automatically taken before the install of KB891711.
The only ad-killing software I am using is POW.EXE and not proxomitron. As already stated: I noticed the problem only when I try to connect to the Internet using ADSL enternet 300 software. I suppose that people suffering from the "blue screen" at StartUp, are doing some kind of direct connection to the internet at StartUp. In the knowledge base from MS I see also that this KB891711 is updated recently: »www.microsoft.com/technet/securi···002.mspx .
I have also a second machine running WinXP SP2, but this OS does not requires this correction.