Hi ACorbs, That was it.. I had the taskbarNotifier1 instance of the TaskbarNotifier() constructor created in the Thread1() of my new thread. I moved the taskbarNotifier1 and as you said the problem went away. Awesome!!!! Thanks!!!! Time to move on..... Thanks alot ACorbs,Skynard and Mav for your kind help!!!! Mark

Hi All, This ones a stumper.... Some more detail.. The thread gets started that loops indefinately. It checks a database for a new message and displays it in the taskbar popup window. In the thread class i created there is a block of code initializing the popup window. When you call the show function: taskbarNotifier1.Show("Chatter",what,500,5000,200); You get a small line on top of the taskbar. If I change the code to this.. taskbarNotifier1.Show("Chatter",what,500,5000,200); MessageBox.Show(what); The popup window shows as long as the messagebox is open. When I close the messagebox the popup disapears. This is very strange almost bug like. Does anyone have any suggestions or thoughts on this.. Please help!!! Thanks, Mark