That is caused by the recent change to include the svn release number in the version string. Looks like this doesn't work on the daily build setup (it works perfectly with the svn builds). The number after the - is the build date (formatted YYMMDD), so you can still tell which build you got. It shouldn't say "unknown" though, that is intended to get displayed if the sources neither have been checked out of svn and are missing version information.