After I upgraded to 10.5.3 and restarted my computer, my computer started acting erratically with it sucking up all my hard drive space (around 5-7GB). After the system became unresponsive I restarted and now I can not login to my primary account. I can log in to my guest account to to another account which I rarely used but not my primary account. Any idea how to get it back? The password is accepted but then it comes back to the same screen!