title: What causes the .NET ToolTip not to work a second time?
body: <p>Using VB.NET 2008 desktop project, I created a simple tooltip on <code>Form_Load</code> event and attached it to a button on the form. Looks great when user hovers over button but times out after 30 seconds (which I set using popup delay etc.). But once it fades out, the second time user hovers over the button, the tooltip never shows up.  Almost like it dies a natural death! Any ideas on how to fix this?</p>