--- rc.vboxadd-service.sh.old	2011-12-10 19:36:11.000000000 +0100
+++ vboxadd-service.sh	2011-09-25 09:48:14.810000000 +0200
@@ -177,7 +177,7 @@
 
     killproc() {
         killall $1
-        rm -f $PIDFILE
+        sleep 1
     }
 
     fail_msg() {