I have a C# program that makes a simple call to a web service.  The web
service gathers data from a database and send it back to my program as
a DataSet.
- After opening the program and initiating the first method call to the
web service, I get back the data set perfectly, and am able to put it
in a data grid to display.
- The second time I call the same method, it "sometimes" gives me data
back, and sometimes I get a timeout exception.
- The third time always times out.

Overview of the code:

Button_Click_Method
    try
         create object reference to the web service
         set the URL to the desired web service location (from a text
field)
         execute a method from the web service depending on what the
user selects from a drop down
         display the data set in a data grid
    catch
         display message box with exception message

Any help would be greatly appreciated.