[PS3] Strange Graphical Errors

So me and a friend bought FFIV:AAR on launch and got everything set up.

My friend however is having serious issues.

I don't really know how to explain it other than the screen flashes different colors quickly while walking or talking. Or anything.

It would be fine and then a line of red flashes quickly on the screen and goes away. I've searched everywhere for the problem and she has reinstalled the game up to three times so far. Does anyone else have any suggestions or at least confirm that they have a similar issue? Any other game seems to work just fine.

Sounds like it could be the cable, the PS3, or the television. http://community.us.playstation.com/.../td-p/31092405

Well I did suggest this, and we tried swapping HDMI cables but it didn't work. As said before we did try playing any other game and it works flawlessly with no hint of color tearing. So we know for sure that its not the cable or television. She does own a Fat PS3, could that be a problem?