Atleast we know they're working on it. I don't mind at all. I've been playing MMO's since EQ1 and it used to be a LOT worse back in the day. Every MMO I've played to-date have been just like this in the beginning. I've never played WoW but I'm sure even mighty WoW had the same problems in the beginning. It's the nature of programming and networking.
It's better to have these downtimes now than 6 months down the line. I'm not happy about it but I know it's necessary for them to do whatever it is they're doing. It'll all work out. Just have patience.