u can’t generate just 1coin, u’ll get 50coins for completing 1block, or you dont get them if someone else was quicker.
a few days ago i was able to generate 50coins in less than a day, but the difficulty to create a block tripled since slashdot and so did the time to generate coins.
so yes, its pretty usual to take “forever” to generate a coin, at least expect it to take a few days, to get your first 50coins, depending on how much cpu-power u’v got to spare.