the licensing scheme used by Sandboxie is not good at all.

They are using a very unusual model, not feasible in real world, at least for such an application.

Guess what happens after 1 year of PRO.

Someone just realized that his/her installation is reverted back to free. Frustrated he/she writes to support, and come across more disappointment that the earlier paid money went to trash. Next what - pay more, go free (not quite possible caz one is addicted now), try free alternates (hmm---so why I paid for the pro---not good), try another way to keep using PRO.......may be, or YES (and I hear developer complaining)

Grr