Someone posted Wireless LAN can't connect with network because he couldn't get a Windows XP machine onto a WPA2 Wi-Fi network. Someone else Answered, suggesting he install an update from Microsoft that adds WPA2 support to Windows XP. That Answer was deleted by a moderator even though it was likely the correct solution to the OP's problem. Why?
The answer was flagged as being not an answer. And since it was only a link accompanied by "Try installing this", I deleted it.