title: Access won't stop "Calculating . . . " till you jiggle the mouse over a certain control
body: <p>We're experiencing this fault on a customer's site. </p>
  
  <p>On one workstation (Access2K3, happens to have a touchscreen), on one of the key forms, the user reported that it was hanging or freezing with "Calculating ..." showing in the bottom left hand corner.</p>
  
  <p>We took a look and found this to be true, except we noticed that you could "release" the screen again by jiggling the mouse around a bit. Then narrowed the jiggling down to one particular Textbox. So long as you move the mouse over this textbox you can release the screen and everything works as normal.</p>
  
  <p>The textbox shows some readonly financials data. Naturally the textbox is blank till after being released, thereafter it shows the correct data.</p>
  
  <p>There is <strong>no MouseMove, MouseDown or MouseUp event for this control</strong>, nor for any other control. The controlsource of the Textbox is admittedly not trivial, it consists of an IF and also uses a VBA function. However similar types of complex controlsources are repeated elsewhere in the app and don't cause a problem, and even this particular control causes no problems on other machines.</p>
  
  <p>Has anyone else experienced this? </p>
  
  <p>Also for debugging purposes - is there any way to find out what exactly is happening step by step when Access reports that it is "Calculating ..." for minutes on end?</p>