--- a/pvl/syslog/tail.py	Sat Jan 26 22:18:40 2013 +0200
+++ b/pvl/syslog/tail.py	Sat Jan 26 22:18:55 2013 +0200
@@ -141,6 +141,7 @@
         if self.file :
             log.debug("%s", self)
             self.file.close()
+            self.file = None
         else :
             log.warn("%s: close on already closed tail", self)