Full user review
"Completely unusable for large folders"
It's wonderful for folks that have half an hour to spare EVERY time they lock or unlock a large folder.
Beware - the trial version is limited to locking folders less than 50MB. They have put this limitation in place to make sure you don't see the insanely slow performance for larger folders. I foolishly plonked down my $40 and now have a piece of software that is completely unusable.
Used it on a 1GB folder
3.2GHz machine, 2GB RAM, 160 GB 7200 rpm hard drive