Extension manager installs (activates) extensions automatically
Ext Manager 6.1.0 in typo3 still is not just fetching but still directly installs new extensions without asking.
This is annoying and should not be the default in stable versions of typo3.
Much, much more annoying is that ext. manager INSTALLS deactivated(!)
extensions when on UPDATING them.
This is not a feature - this is a more than serious bug in my opinion.
(Reported by user against TYPO3 6.1.7.)