Spaces in passwords

Do spaces (ASCII 20) in passwords make them less secure? I was speaking with a security admin who feels that spaces decrease the effectiveness of passwords. I thought that they would actually do the opposite & increase password efficacy, as most password dictionary attacks do not attempt to attack embedded spaces. An attack trying to penetrate embedded spaces would seem to make the dictionary orders or magnitude larger. Any comments? Ben ------------------------------------------------------------ The views expressed are exclusively my own & not that of my employer -----------------------------------------------------------