it was really really really laggy for a couple nights then they did something and the lag was gone. no idea what they did though. then last night aqua crashed ;_;.
also, i don't remember what server is first on the list now but i'm on aqua, ign Fyoran. add me if you want and i can help with dungeons unless i'm in the middle of guild quests or something.
as for the skills:
General Skills are the ones that cost gold. you can max all of them if you want but it gets very expensive later on. all classes of the same type (tank, melee damage, ranged damage, healer, magic damage) share general skills though which makes it a lot easier to level up a new class.
Class Skills are specific to each class (thief, warrior, illusionist, etc.) and use class points which you get from killing. however i just heard yesterday that you stop gaining these points once you max a class (level 40 in cb) so you won't be able to max everything it seems since once you get the skills to 3x they start taking so many points that you can only level up 2 or 3 per level.
Knowledge Points/Class Expertise are also specific to a class. you gain one knowledge point per class level (Start with one). expertises take one point from level 1 - 5, two points from 6 - 15, 3 points from 16 to 20. not all go to 20 though. they're all passives that affect either your character's stats or skills. however as of right now it seems the ones that affect skills are bugged. in general things that increase the affect of a skill (like increases the stats gained from a buff by 10% or increases the healing of a skill) don't increase the affect. the one exception to this may be the attack speed increase on the knight skill "classy finish". duration increases do work though. bard would be fucked if they didn't.
i'm gonna try to keep up a list of bugged expertise skills here:
http://www.aeriagames.com/forums/en/....php?t=1221753
post anymore you find that aren't listed please.