Slothd lock files were persisting and preventing startup.

tmcd/cygwinxp/prepare

@@ -76,11 +76,16 @@ system("$BINDIR/rc/rc.syncserver shutdown");
 
 print "Stopping slothd ...\n";
 system("$BINDIR/rc/rc.slothd stop");
+my $pidfile = "/var/run/slothd.pid";
+unlink($pidfile) or
+    warn("Could not unlink $pidfile");
 
 print "Stopping evproxy ...\n";
-my $file = "/var/run/evproxy.pid";
-system("kill `cat $file`")
-    if (-f $file && -s $file);
+$pidfile = "/var/run/evproxy.pid";
+system("kill `cat $pidfile`")
+    if (-f $pidfile && -s $pidfile);
+unlink($pidfile) or
+    warn("Could not unlink $pidfile");
 
 # Logfiles.
 print "Cleaning logfiles ...\n";