I have the exact same problem! I spent two hellish weeks talking to an endless stream of Verizon and Motorola techs and salespeople, trying to figure out why my phone stopped recognizing my SD card and internal storage within a day of each hard reset, even after getting TWO brand new Bionics, TWO new SD cards, a new battery, and a new SIM card. I just figured out on my own that it was my corporate sync. Every time I add corporate sync, my storage becomes unavailable (mount internal storage is grayed out, unable to click), and the only way to get it back is hard reset. I was able to access my corporate sync without trouble for a week or two, until teh morning of December 15, which is when this problem began. My IT Director insists that nothing changed in the server config that day. He has a Motorola Droid that is synced without trouble. I'm terrified to ever add my corporate email again and risk having to hard reset again. Will you please let me know if you figure out what is causing this problem? I will do the same for you!