recently i installed Nautilus just to reproduce a problem which a user reported
related to Nautilus. Since then i haven't rebooted or logged out. After rebooting today,
when mounting my eSATA harddrive via the small icon in device notifier

(like in this image the icon in the upper right corner)
Nautilus pops up. This seems to be a bug, as i didn't want it top open with file manager, but only mount it.
Nautilus is also not associated with the MIME types for inode/directory, and Dolphin is set as standard file manager.
Can anybody reproduce this or even better, know how to fix this, without removing Nautilus?