Yeah, the login servers were having issues for several hours in the early morning hours on Saturday, but I haven't seen much beyond that.
I do sort-of wish the AH was up and running, but it's not a big deal. I usually can get a decent amount of money buy gathering and then selling the materials. Often that works better for me than grinding out a crafting skill (I usually end up regretting the grind later, due to the costs and the money I could have had from just selling the materials).
Speaking of crafting... I assume you already have all 8-slot storage bags/boxes or better by now. But if not, I made some 8-slot boxes and have extras.
I haven't tried any of the PVP yet, I usually save that for closer to end-game as I use up the PVE content. But I may give it a shot sooner or later, since I think it level-balances you there too.
I started running into issues last night with dying a lot, but I've been sticking to one zone, and ended up doing content 3 or 4 levels above me. I finally finished the zone and hit level 24, and the next zone over is another 15-25 zone, so it looks like I'll be having smooth sailing for a while again (I should have bounced back and forth, but wasn't thinking that way). As long as the content is level appropriate, I tend not to die much. The warrior is pretty survivable, and versatile (though it looks like all of the classes are versatile in this game).
I'm actually glad I chose the Warrior. I can spec myself for DPS, and wear the heavier armors, and the longbow is full of fire and explosive arrows.