OK, I tried this last night and I think I traced the time it woke up in the log (but I'm not sure). Does this mean anything to you?:
16/09/2010 23:24:07 [0x0-0x5e65e6].com.flock.Flock[27351] no details
16/09/2010 23:24:07 [0x0-0x5e65e6].com.flock.Flock[27351] no details
17/09/2010 01:59:49...