--- portage_exec.py.orig	2005-10-29 19:15:42.000000000 +0900
+++ portage_exec.py	2005-10-29 19:17:35.000000000 +0900
@@ -14,12 +14,9 @@
 	global spawned_pids
 	while spawned_pids:
 		pid = spawned_pids.pop()
-		try:
-			os.kill(pid,SIGKILL)
-		except SystemExit, e:
-			raise
-		except:
-			pass
+		if os.waitpid(pid,os.WNOHANG) == (0,0):
+			os.kill(pid,signal.SIGKILL)
+			os.waitpid(pid,0)
 atexit.register(cleanup)
 
 from portage_const import BASH_BINARY,SANDBOX_BINARY,SANDBOX_PIDS_FILE