Confirmed for konsole 2.5.4 in KDE 4.5.5 on Fedora 13 x86 and on Fedora 14 x86_64.
It is not screen specific, just type
kill -HUP $$
at a Bash prompt in console and the session crashes.
Xterm and gnome-terminal just close the current tab/session with exitcode 0.
Confirmed for konsole 2.5.4 in KDE 4.5.5 on Fedora 13 x86 and on Fedora 14 x86_64.
It is not screen specific, just type
kill -HUP $$
at a Bash prompt in console and the session crashes.
Xterm and gnome-terminal just close the current tab/session with exitcode 0.