I have experienced some serious lag in the teething stages. Have been in a conflict zone where other cmdr's complained they couldn't see the enemy and then found myself fired upon by invisible ships, and also in the RES in a wing, one of my wingates went from 50% to dead just like that. Could just be that the powerplants went, however, after my friend died, I was masslocked and nearly killed (20 % hull) by another invisible ship (wing mates said they could see nothing chasing me and I was well beyond asteroid masslock). As a result, I am flying cheaper ships, courier mostly, while the update passes it's teething problems, but I feel for all the people who've accidentally clicked on giant repair bills or other stuff.