United States v. Serna, ___ F.3d ___ (9th Cir. Jan. 23, 2006) (sentence for felon in possession of a firearm vacated since prior conviction for possession of assault weapon in violation of California Penal Code 12280(b) was not "crime of violence" under the federal Sentencing Guidelines for purposes of sentence enhancement).
http://caselaw.lp.findlaw.com/data2/circs/9th/0410597p.pdf