The Proxy blocker; important notice to all Wikipedias

I have discovered there is now a robot active on I believe all 
Wikipedias whit the name "Proxy blocker".

It blocks automaticly all users who are using a open proxy server.

It looks like a action form the English Wikipedia.

This is likely a violation of the blocking policy on most Wikipedias so 
inform your users about this and discuss it.

To trigger the Proxy Blocker go to http://www.publicproxyservers.com and 
  use a "transparent" proxy.

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Contact: walter AT wikipedia DOT be