Yep. Unbelieveable but true, unfortunately. After that episode in season 2 when Andrea shoots Daryl after mistaking him for a walker, Holden received death threats.

http://comicbook.com/blog/2013/03/08/the-walking-dead-laurie-holden-got-death-threats-after-andrea-shot-daryl/

Can you guys believe this? This is some serious stuff...