Numerous DHCP entries in log

Hi, I've currently had my RT-N66u for about a month and a half now with no issues. I was looking at settings tonight when I checked my log and found this:

May 21 04:41:43 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:41:43 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:45:39 dnsmasq-dhcp[491]: DHCPREQUEST(br0) 192.168.1.128 (Removed)
May 21 04:45:39 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:45:44 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:45:44 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:47:05 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:47:05 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:48:21 dnsmasq-dhcp[491]: DHCPRELEASE(br0) 192.168.1.128 (Removed)
May 21 04:48:29 dnsmasq-dhcp[491]: DHCPDISCOVER(br0) 192.168.1.128 (Removed)
May 21 04:48:29 dnsmasq-dhcp[491]: DHCPOFFER(br0) 192.168.1.128 (Removed)
May 21 04:48:29 dnsmasq-dhcp[491]: DHCPREQUEST(br0) 192.168.1.128 (Removed)
May 21 04:48:29 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:48:32 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:48:32 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:49:55 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:49:55 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:55:26 dnsmasq-dhcp[491]: DHCPREQUEST(br0) 192.168.1.128 (Removed)
May 21 04:55:26 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:56:31 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:56:31 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:57:37 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:57:37 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC
May 21 04:59:08 dnsmasq-dhcp[491]: DHCPINFORM(br0) 192.168.1.128 (Removed)
May 21 04:59:08 dnsmasq-dhcp[491]: DHCPACK(br0) 192.168.1.128 (Removed) M-PC

Is this normal? That often? That is my laptop which is running Windows 7 Professional 64bit with an Killer Wireless-N 1103 card. My router has Asus 3.0.0.4.354 firmware on it.

I've done some searching on these but found little to no info on them. Is there a way to read them to see what's causing this?