What's Window7's problem?

[#1]

Why is Windows clogging up my router log with UPNP messages?

Quote

[UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:38:25 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:37:47 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:37:16 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:36:36 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:35:52 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:35:12 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:34:38 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:33:55 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:33:24 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:32:53 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:32:22 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:31:40 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:30:56 [UPnP set event: Public_UPNP_C3] from source 192.168.1.4, Sunday, Jun 10,2012 14:30:15 ....

[#2]

do what i do TURN it off 

[#3]

Or do what I do and use Linux when on line.

[#4]

I mostly do use Linux - which behaves itself. 
It seems that I have to follow
http://www.sevenforums.com/tutorials/185237-network-discovery-turn-off-windows-7-a.html
Isn't Windows easy to use?