Sorry. The recent Marvel "event" series, "Age of Ultron" (No relation to the upcoming Avengers movie) had Ultron taking over the world and Wolverine going back in time to kill Hank Pym before he could create Ultron. That just created a worse situation, so he travelled back to that point again,
stopped himself from killing Pym, and they worked out a new way to stop Ultron. However, the stress on the timeline caused it to "shatter", which is causing all sorts of mayhem in both the regular Marvel Universe and the Ultimate Universe.