I got my monk from 15-52 over two to three weeks playing casually(got 52 last week) and just doing dungeons longest queue was maybe around 35-40 minutes. I think you are over exaggerating either that or your data centre is dead and maybe look into a move.

And I have 60 PLD/BLM/SCH again all done via dungeons ok except BLM since I used the HW quests.