I did go back and add a bit to this part to explain it away - not sure it worked very well though. I'm afraid I haven't seen any of SG1 except the DH eps - I tried but could never get into it for some reason. It's weird because I love SGA and it's the same writing/production team. Just one of those things I suppose. So no, I've never seen the mirror ep - I figure the QDD is an entirely separate device and could therefore be configured differently *g*.