I too had this , but thing is im in the US of A, and my Ace is from the Netherlands. no support in the US, so its either expensive, long shipping to the Netherlands, or fix it in the US. No one helped me when I asked this :/
So anyways, for those of you who couldn't send your hard bricked Ace to Samsung, either different country or no warranty, try a JTAG repair. I used MobileTechVideos' in the US, total should be about ~$50 (8 bucks for shipping and 40 bucks for service) and should be done in less than 2 weeks. Just google MobileTechVideos, get on their selling site and look for Samsung Galaxy Ace. That's for US peeps, and for other people, as I said before, try to find a place that does JTAG repair. Good luck guys.