Hi July, I think when you've hit a milestone and are motoring along well, you relax a bit. That's when AV pounces - gotcha! You can never relax.
At least you know the beast is still lurking, looking for a ***** in the armour. I have 18 months, was having lunch at a pub today and sure enough it popped it's head up. Didn't get me though because I sort of know it's going to happen from time to time.