This is happening to different people, with different ISPs. One thing I noticed is that the our network speed indicator goes to 0 whenever this happens to me. Sent is ok, but received is at 0.
Seems like a server issue to me. I played this game perfectly in beta and even when we could barely get on, whenever I got in. Starting the day before the big maintenance I cannot go a day without lag spikes or being disconnected at least 4 times in a day.
This is the case for everything. I've tried:
Resetting everything.
Changing rules in my router.
Checking out my Windows Firewall.

I was going to redownload the game, however I see that many people had did this already and it didn't matter.
I would like at least first a confirmation on this problem, so at least my group members don't look at me like I'm a noob during boss fights.

I live in Philadelphia, PA area. Diabolos. 50D 15U.