I might try resetting the Bios to its default values, then check your WOL feature.
I am having a problem with one of my computer systems: out of the blue it is turning itself on. I have traced the problem to the network, if I remove the network cable the computer doesn't turn itself on anymore. At first I thought it was the "wake-on-lan" feature, but I checked the bios and this feature is disabled. Also, I was under the impression that this can only be activated with a specially formed packet, and neither me nor my wife is using this feature(it is a small home network). So unless some malicious user is doing this I don't think this is the case. Sometimes I would have all my systems off, come home from work and the system would be on. Othertimes I would turn the router on/off or unplug the system from the router and the system would turn on. Today, I discovered the system turns itself on whenever I play a streaming real audio file on another system. It is like some unintended remote power on feature.
I am already using my spare network card, the previous network card had an unrelated problem. I don't remember when this problem started happening exactly, this system was in mothballs for awhile and is not my primary system. My current theory is that it is a bug in the system/nic bios or some kind of hardware bug. I was wondering if anyone else has run into this problem before or has a suggestion to fix the problem.
System specs:
MB: ASUS K7V Award Bios Revision 1007 Beta 001-A
NIC: Realtek RTL8139
Router: Linksys BEFSR41