Heh, I was just checking to see if anyone was watching our ads. You had a 1 in 17 chance of seeing the double ads, which only happened when the random number was 1. The reason the ad was being shown twice was because there were two duplicate lines checking for a random number of 1. I removed the offending line of code.
HaHaHa Ed I should of known you'd be the one to catch it.