Since yesterday the blocklist of SORBS is used on the wikimedia servers
to block open proxies.
If someone is having troubles to edit now, here are the steps he can do
to solve the problem:
* he first has to determine the IP address wikipedia is blocking, that's
not too hard, it's on the blocking page
* then he has to get someone on another computer to check if it's an
open proxy. the procedure is described here:
* if it is, then he should complain to whoever controls the server to
fix the configuration
* if not, he should request a retest
) to be taken out of the list. the
status of the proxy might have changed since it was last scanned.
Please translate/forward this to your project to inform people.