diff -ur xdm-1.1.9.old/config/Xstartup.cpp xdm-1.1.9/config/Xstartup.cpp
--- xdm-1.1.9.old/config/Xstartup.cpp	2009-09-18 04:24:37.000000000 +0200
+++ xdm-1.1.9/config/Xstartup.cpp	2009-11-13 13:40:38.000000000 +0100
@@ -1,5 +1,5 @@
 XCOMM!/bin/sh
 XCOMM Register a login (derived from GiveConsole as follows:)
 XCOMM
-BINDIR/sessreg  -a -w WTMP_FILE -u UTMP_FILE \
+exec BINDIR/sessreg  -a -w WTMP_FILE -u UTMP_FILE \
 	-x XDMCONFIGDIR/Xservers -l $DISPLAY -h "" $USER