Hi everyone, I wrote a simple test trying to find why my app freeze when change the system time: ################# from twisted.internet import reactor, task import time def callback(): print time.ctime(time.time()) t = task.LoopingCall(callback) t.start(2.0) reactor.run() ################# If run this and change the system time, let's say a day forward, everything work fine, but if change the system time backward, the program freeze until you change forward again. This is specially problematic for a computer using ntp, updating its clock time to time. It seems that there is a problem in LoopingCall._reschedule that don't play well when "fromNow = self.starttime - self._seconds()" is negative, and seems to be platform independent: W2k Pro python 2.4.4 twisted 2.4.0 Wxp Pro python 2.4.4 twisted 2.4.0 Ubuntu Linux 5.1 python 2.4.2 twisted 2.0.1-4 I'm not a twisted expert, but and extensive user and fan, and I don´t know how to workaround this. Any clue? TIA ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com