Eircom netopia 3-D reach usb wireless card causes stop errors?

Hello, I bough a new PC in January soon after getting Eircom broadband I started getting stop errors (IRQL BOT LESS OR EQUAL) since my PC was (and still is) under warranty I sent it in for repair. The replaced the RAM and sent It back. The problem persisted, so I sent it back again. This time they replaced the TV tuner card (the only other thing on the PC with memory) the problem persisted. Obviously at this point I was getting angry so after a phone rant they sent some on out to me to have a look. He replaced the TV card card again but took one look at my netopia USB wireless card (the one I got from Eircom) and said that this might be the problem. I rang Eircom to send me a replacement and after that went 3 months without a stop error, but now they have started again.

So I have to ask, does anyone know if the netopia 3-D reach wireless USB card supplied by Eirecom can actually cause stop errors? Or was the repair man just passing on the blame?

I also have a logitech wireless keyboard and mouse that is using setpoint 2.20.733 could this be causing the problem?