Everyone Loves Me That's why it Burns When I Pee

I've discovered that a computer user named Alsaleem has connected to my network.
I noticed him a couple weeks ago and I deleted his music folders.. Today I locked the router.
Unfortunatly my laptop doesn't like the encrypted router. Therefore it keeps dumping me every 30 minutes.
Hopefully Alsaleem will get his own internet connection and I can unlock my router again.