The real reason is obvious! 800,000 coins stolen by MtGox are being slowly and carefully dumped on the open market, driving down the price.
The flooding of the market by the Goxxed coins will probably continue to keep the price low until they are all absorbed by investors and consumers .. how long will that take? No one knows.
maybe... and i am sure that the influx of newly mined coins on a constant basis every month is playing a role too.
what i think is that unless something happens to fuel mass adoption then we might not see substantial rise until at least reward halving.
now is time to mine while price is low pay less income taxes on mined coins.