Hello timepass,
Sorry about this. We agree that it is very annoying to have a software sitting on your pc if you do not need it. Will certainly report this to ShowMyPC.
In the meanwhile, please try the steps mentioned here to remove TightVNC
http://showmypc.com/faq/uninstall-showmypc.html
We'll also test the same on one of our office PCs tomorrow.
Sorry about this. We agree that it is very annoying to have a software sitting on your pc if you do not need it. Will certainly report this to ShowMyPC.
In the meanwhile, please try the steps mentioned here to remove TightVNC
http://showmypc.com/faq/uninstall-showmypc.html
We'll also test the same on one of our office PCs tomorrow.
Just wanted to let you know that we had reported this issue to ShowMyPC and they've resolved it. Now the TightVNC does not start automatically on reboot.
Tomorrow we'll upload the latest ShowMyPC file to our Dropbox.