A small bug that is sometimes really annoying, but now I know it's easy to fix:

Perl stat() is unable to return a correct modify date for the root folder of a 
drive(e.g. stat('c:/') ), instead it returns always 315529200 (1.1.1980) - so 
the fix is to add " && ((stat(Slim::Utils::Misc::pathFromFileURL
($playlistpath)))[9]) != 315529200 " to the if clause in line 389 of scan.pm. 
(SlimServer nightly 2004-10-05)
So every folder with a change date of 1.1.1980 is taken as unknown and 
rescanned as if there is a known change.