The "How I Met Your Mother" star claimed John Hobbs has been harassing her on the Internet with threatening messages on Facebook, MySpace, and her website, according to TMZ.

They report that she was granted a temporary restraining order for herself, her husband and two children by L.A. County Superior Court and a judge will decide whether to make the restraining order permanent after a hearing on March 6th.

Hannigan reportedly claims that Hobbs is "mentally unstable and was recently discharged from a mental hospital."