Valor,
Remote management is only one associated with SNMP , however you have it disabled.
Just for shits and giggles enable it and disable again (the Remote Management that is)..
Could be a bug,,

You might also want to install a protocol analyzer to capture packets to and from PC/router...
IF you dont have one, you can download trial version of Etherpeak...(nice GUI analyzer)
http://www.wildpackets.com/products/demos/epw (this version for wndows)

Cheers