For those interested in whether Jesus spoke Hebrew, there is a new book of essays: Randall Buth and R. Steven Notley (eds.), The Language Environment of First Century Judea (Leiden: E J. Brill, 2014).
The list of contents can be found at http://www.jerusalemperspective.com/12254.
A sample essay on the question whether ‘Hebraisti’ means ‘Aramaic’ is also available online through an article at http://www.biblicallanguagecenter.com/more-jesus-hebrew-speaker.
The Solution