Something strange in my router's list of attached devices.

Question

This might be a tough one.
Here is my setup: Imac g5, cable modem and netgear rangemax wireless router, ethernet connection, WEP encrytion with SSID broadcast disabled. Currently not taking advantage of the wireless yet.
Here is the strange thing: Most times (I am paranoid and check all the time to see if anyone is trying to creep into my network), when I check my list of "attached devices" in my router login page I see this:
Attached Devices
IP Address: 1. 192.168.1.3
Device Name: -
MAC Address: (don't know if I should show that)
Notice that there is no "device name."
And sometimes I see this:
Attached Devices
IP Address: 1. 192.168.1.3
Device Name: YOUR-XB2X7J77GN
MAC Address: ***************
Obviously, the weird thing here is the "device name."
Now, I googled my device name: YOUR-XB2X7J77GN and got a few hits that contained words like "hack" and such and some hits that didn't really saying anything suspicious. Didn't find anything that seemed to do with wireless networking though. Seems like someone else somewhere in the world would have noticed this and posted in some forum about it but nothing that I found, which I think seems a little odd. Google this name and see what you think.
Question: Why does my device name change sometimes and should it be changing. Is this worth looking into and do most user's just not care to even look at this stuff?

Answer 1

Don't know, but I've read in Apple articles and elsewhere that WPA is more secure than WEP, and that was prior to WPA2. You might want to consider switching over.