I have been getting this way too often as well, I was kicked from the server twice just now, the second time was immediately after I logged back in. It happens way too often, regardless of which PC I use. (I have 2)
Platform(s): 2 laptops, running windows 7 (64bit) 4-6 GB ram
ISP: Verizon DSL (before you ask, I've already looked into FiOS, and no it's not available in my area)
frequency: at least once a day, upwards of 5-6 times if I haven't given up.
char name: Uni Neko
Race: Seeker of the sun Miqo'te
class: r38 Archer
phys. lv: 48
area: Irrelevant, it happens EVERYWHERE
party or solo: both, often while in a levequest
Symptoms:
Usually happens between 9pm and 2 am est (the time I usually play) Game will just freeze without warning, often while the network status icon is still green. Always followed by the error 30002 screen, sometimes is accompanied by an error 30001, and sending me back to the title screen. On occasion, I will get the same error again almost immediately after logging back in, at which point, the game will not allow me to login for upwards of 20 minutes.
As I stated above, this happens way too often, and is not acceptable. If there is a solution to this problem, I would love to hear it. It might even help if we knew what the hell the error code actually means.