Hahahahaha. That was funny.
Consider, though, that you shouldn't have use the Pentium 4 as being part of the server hardware, since Intel stopped selling the chip 3 years before A Realm Reborn went live.
You must be new. Back in the LK days of WOW, 24 hours was considered LIGHT.
I guess, they update also the OS on their servers. And if you run Windows, Windows-Update can take a very long time. :)
Cheers
I've played other games with very long maintenance times and honestly, I prefer if they take longer but make sure everything works. I remember RIFT updating within a few hours, going back on and having to go down again to hotfix gamebreaking bugs.