Been a Long, Lonely, Lonely, Lonely, Lonely, Lonely Time

Okay, so, Fall Break has stretched into an extended hiatus, as wedding and honeymoon time have been supplanted by research time and job-application time and write-the-dissertation-already time. I have a brief moment of blogging time tonight, though, so I return with a question:

Curriculum Vita or Curriculum Vitae? Or does it matter? My understanding was that "Vitae" was plural, but still acceptable usage (similar to "criteria").