User Profile Service Stops When Implementing Network Access Protection/Control

This is such a major and ridiculous bug on Microsoft's part:

Givens:
Windows Server 2008 SP2
Network Protection Services is implemented

Problem:
User Profile service stops periodically, preventing users from authenticating.  A message beginning with "Faulting application svchost.exe_IAS, version 6.0.6001.18000" is recorded in the event log.


Cause:
A user enters a valid username, but the password is incorrect.  At this point the service crashes.


Fix:
So far there is none.  You either have to roll back to a previous service pack or not use PEAP.  Look for a hotfix or expect this to be a fix in SP3.