Jens-
The last few days, Michael is editing without being logged in. The IP's he uses get blocked by some sysops.
AOL is forcing its customers to use proxies. We do not see the dynamic IP of Michael, we see the IP's of the proxies he is using (and others are using, too).
Aha! This is very annoying. All the more reason to implement an auto expiry for IP blocks. Right after the feature freeze ..
Regards,
Erik