I got lag in the IoD wilderness so bad my party had to log out and come back but it didn't get better so we logged out for the night. This was around 9pm Eastern
Late plane Thu night, got back Fri 1am Alaska time (5am EST). Couldn't sleep, played for the next five hours, took a nap. No lag to speak of. (Fri 5-10am EST).
Got back on this afternoon around noon (4pm EST). An occasional stutter, no complaints. As RR noted, about 8:30-9:00pm EST, lag in Cogs. Frozen, jerking about, couldn't restart out of it, shut down until midnight, tried again. Finished Cogs, started Sharn 1, lag hit again trying to get in very first quest. Gave up for tonight, decided to check out the forums, see what I've been missing.