Maintenance for the week of March 9:
• [COMPLETE] ESO Store and Account System for maintenance – March 11, 9:00AM EDT (13:00 UTC) - 1:00PM EDT (17:00 UTC)
Not lately, but I've seen it happen more than once. It's like the server has a massive rollback for just one person or something. You might want to look at the bright side. You didn't get disconnected or booted out of Cyrodiil.