Yes these are the Northern Lights Auto's from Nirvana Seeds, I've used a lot of their seeds and have always done ok with them.
I've always been a little worried when it comes to Auto's as it seems the genetics can be a bit hit and miss, at least you spotted that one early enough and got rid of it! I don't think auto's are the best for beginners personally, for that reason for a start. Plus the fact if you get it wrong in veg there is no time to recover usually as they switch to flowering on their own, and then you have to stick with it. At least with photo seeds you can recover them a bit in veg and switch to flower when you are ready. I can see the big attraction though when they claim you can get a crop in 60-80 days but it doesn't always work out like that, and if they are a cock up then you've wasted all that time for nothing.
I'm currently vegging some Big Bud by Vision Seeds to be my first crop of the year in my hydro system, they are a cross between Northern Lights #1 and Super Skunk #1. They should be ready to transplant any day now, so i'm looking forward to getting them going. They may be oldies but they are goodies, they are both hard to get wrong and deliver a very satisfactory result. I too made the mistake as a newbie at the time by buying some super duper seeds that were quite difficult to grow and I ended up messing them up, and it cost me a fair bit in time and money. You live and learn though!
Sorry you lost one, so I'm sending you some good karma for the remaining 4 and hope they do ok!!