screenshot of german version. the same in other languages?

http://stefan2904.googlepages.com/screen-332.jpg

[Fixxed title from rader to reader -Corsin]

See this thread from back in April:
http://blogoscoped.com/forum/25836.html

To summarize, when you click the button the subscribe to a feed, it appends [&client=firetools] to the URL which removes the option for subscribing to the feed using Google Reader – e.g.:

http://www.google.com/ig/add?feedurl=http://www.example.com/feed.xml&client=firetools

vs.

http://www.google.com/ig/add?feedurl=http://www.example.com/feed.xml

You can remove this manually yourself by typing [about:config] into your address bar and removing the [&client=firetools] from the[google.toolbar.subscribe.aggregators.iGoogle.url] preference value.