I have just checked how long my machine has been running for and noticed 4 users logged in, so I used the 'who' command to see who they are but they are all my account.

What is going on here, how did I manage to log in 4 times?
Thanks.
[doktor5000@Mageia3 ~]$ who
doktor5000 :0 2014-01-13 19:47
doktor5000 pts/0 2014-01-13 19:47
doktor5000 pts/1 2014-01-24 23:52
[doktor5000@Mageia3 ~]$ w
23:54:24 up 11 days, 4:06, 3 users, load average: 0,17, 0,25, 0,35
USER TTY LOGIN@ IDLE JCPU PCPU WHAT
doktor50 :0 13Jan14 ?xdm? 37:49m 0.04s /bin/sh /usr/bin/startkde
doktor50 pts/0 13Jan14 11days 0.00s 4:01 kdeinit4: kded4 [kdeinit]
doktor50 pts/1 23:52 0.00s 0.10s 0.00s w
[doktor5000@Mageia3 ~]$ who -b
system boot Jan 13 19:47
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