PNRP 2.0 Upgrade for XP is Bad News

After installing KB 920342, wireless networking completely stopped working for me. Between Bonjour, ThinkVantage Access Connections, Intel PRO/Set Wireless, and all the other networking items, I have no idea what completely choked after installing this upgrade to a feature that I don't even understand. I recommend avoiding it.

In fact, perhaps the optional updates in Microsoft Update aren't really worth it:
  • A Root Certificates Update led to redundant friendly names
  • A new driver for Lenovo locked my keyboard and trackpoint, even in safe mode
  • And now, PNRP 2.0