I had got this from my server logs. I wonder what does it mean by that? (Last reboot, The repetition of the same day and time)reboot   system boot  3.13.0-35-generi Fri Jul 10 17:15 - 12:06  (18:51)    reboot   system boot  3.13.0-35-generi Fri Jul 10 16:56 - 12:06  (19:10)    reboot   system boot  3.13.0-35-generi Fri Jul 10 11:11 - 12:06 (1+00:55)  
Last reboot shown few rows at the same time?
logs;reboot;last