The new config var $wgMaxRedirects allows for setting up how many redirects should be resolved recursively. However, apparently the software resolves always *one more* redirect than specified (see url).
I can confirm this on a local install, where $wgMaxRedirects is explicitly set to 1.
Version: 1.15.x
Severity: normal
URL: http://de.wikipedia.org/w/index.php?title=Benutzer:AYArktos&redirect=no