The message should only comes up if sombedoy press der shortcut. It happens very often that i press ctrl+q, but I just whant to press ctrl+w. With the new tab-modus it whould be nice when a warning message comes up if I press ctrl+w an I have more than one tab open in the window. It should be possible to switch off the warning messages in the preferences. (Or is there still a option and I didn't see it?)

There's bug 52821 and bug 39057 about this problem...

This is actually a duplicate of bug 51584 and bug 54331. Both are marked as dups of bug 39057. As for ctrl-w, there is a patch to make it close tab instead of close window in tabbed mode. That should be getting checked in soon. *** This bug has been marked as a duplicate of 39057 ***

vrfy dupe