I only know Second Life from watching the TV show the office
But if it's not stressing the video card, then maybe it's not showing a problem. But if it's happening in any other game that DOES stress the video, then you may have a problem with the GPU on your laptop. I don't know what Gateway would do about it either. When I asked them about my keyboard having a problem they directed me to a different company that sold all the parts they used (at stupid prices), so I don't know what they would tell you about the GPU. You may be able to send it in, but who knows what they might charge you.
But if it's not stressing the video card, then maybe it's not showing a problem. But if it's happening in any other game that DOES stress the video, then you may have a problem with the GPU on your laptop. I don't know what Gateway would do about it either. When I asked them about my keyboard having a problem they directed me to a different company that sold all the parts they used (at stupid prices), so I don't know what they would tell you about the GPU. You may be able to send it in, but who knows what they might charge you.