That's where the last commit date goes (if you have Subversion and if 
svn.exe is in 
PATH).
If Subversion is found, 
autorevision will use it to cleanly determine the revision number and last commit time, otherwise it will hack the revision number from the 
entries file.
Since the nightly builds have empty parentheses, this proves that Lieven doesn't have 
svn.exe in 
PATH on his machine. That's fine, it just does not show the commit time 

No other implications, no problem with that. 
