Below is a link to a wonderful podcast of a talk given by Greg Kearney at the 2005 FAIR conference.
Was Joseph Smith a Mason? Yes he was.
Are the LDS temple ceremonies based on Masonic rituals? In some areas yes, in others no.
Should Mormons be afraid and have this affect their faith? No they shouldn't.
It all makes wonderful and perfect sense when you put away your fear and listen to the facts and understand the history.
I had heard of the Joseph Smith and masonic rumors for years and was always afraid to investigate thinking I was jumping into the darkness. But once I listened to this podcast I celebrated and appreciated Joseph Smith and his ministry even more.
"This is a parallel podcast to the presentation made by Greg Kearney at the FAIR conference in 2005. Greg used the title “Message and the Messenger” to distinguish how a teaching, principle or concept can be illustrated by symbols. There are those who see this system as a secret combination designed to avoid public inspection. Yet in this podcast we explore the symbolic teaching method used in Masonry and in the temples of the Church of Jesus Christ of Latter-Day saints in more detail, to offer insight into what might be considered a deeper understanding of the sacred commitments we make to each other and Deity."
Here is a link to KSL's Religion Today podcast with Martin Tanner that addresses the same subject but comes to a slightly different conclusion.