This is the second time this has happened to me this week. The first time was on my netbook, the second on a VM on my desktop. Whenever I try to log in to my account through the GUI the screen flashes black, then I arrive back at the log in prompt. I can log in to my account through the terminal (Ctrl-Alt-F1), and I can log in to a guest account. However, I can't log in via "normal" means.
Has anyone else had this issue? If so, care to shed some light on this problem?