Winsock control questions

While I was working on a network aware game using the Winsock control in VB I came across an nteresting problem that I can’t seem to solve.
When a program, which has used the listen method of the winsock control, ends or unloads the form disapears but the program is left running, visible in windows task manager, and I just can’t get it to actually close itself. To test this all one must do is create and executable project with a winsock control, invoke the listen method, and then try to end the program.
If anyone knows why this is happening or how to solve it please contact me at EvilDrag0n@hotmail.com

Thank you